Posted by **Amit** on Wednesday, July 30, 2014 at 11:04pm.

if 4,2x-4,......,64,21x+2 are the terms of GP . find the value of x ?

- math -
**Reiny**, Thursday, July 31, 2014 at 12:06am
if GP , then

(2x-4)/4 = (21x+2)/64

128x-256 = 84x + 8

44x = 264

x = 6

check:

4, 8, ... , 64, 128

YUP, common ratio of 2

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