Thanks to all that responded but I can not put column A in ascending order
because column A represents the emptying and then filling of a tank (volume)
and Coulmn B represents the time in minutes to complete the process. The
tank volume decreases to a certain point and then starts to increase until it
hits 237.50 and then every volume after that equals 237.50 When I used the
VLOOKUP before, the function pulled the very last 237.5 and the corresponding
time value which is not correct for my needs. Any additional help would be
appreciated.

"PCLIVE" wrote:

You can use VLOOKUP but your data will need to be in ascending order by the
lookup column.

=VLOOKUP("237.50",A1:B19,2,0)

HTH,
Paul

"yazmaz" wrote in message
...
I have two columns of numbers, A1 = volume & B1 = an associated time
interval. I need to look down column A and find the first time a specific
value appears and then capture its corresponding value in column B to use
in
another formula.
Ex: I need to find 237.50 in A and use the corresponding 117.8. Thanks
Col A Col B
220.70 5.60
203.90 12.20
187.10 18.80
170.30 25.40
153.50 32.00
136.70 38.60
119.90 45.20
103.10 51.80
86.30 58.40
69.50 65.00
93.25 71.60
117.00 78.20
140.75 84.80
164.50 91.40
188.25 98.00
212.00 104.60
235.75 111.20
237.50 117.80
237.50 124.40