Question

Determine if the following are in proportion.
$15,45,40,120$

Answer 1

Ratio of 15 & 45 Ratio of 40 & 120

$\therefore \frac{15}{45}=\frac{1}{3}$ $\therefore \frac{40}{120}=\frac{1}{3}$

Hence, 15, 45, 40, 120 are not proportion