Distribute values over larger (smaller) range
 

Need some suggestions...

I have the following ranges
Periods in column A (1-100)
Values in column B (%'s)
A B
1 2%
2 5%
3 3%
4 4%
5 6%
... %
.... %

How can i distribute the values in column B if the periods in column A get
larger or smaller than the set values in the range?

Thanks,