# Given that #a^x = b^y = c^z = d^u# and a,b,c,d are in G.P, show that x,y,z,u are in H.P?

##### 1 Answer

Aug 26, 2017

Please refer to a **Proof** given in the **Explanation.**

#### Explanation:

Given that,

Suppose that,

Now, **G.P.**

By

**A.P.**

**H.P.**

Hence, the **Proof.**