Question

Determine if the following are in proportion:
$91,104,119,136$

Answer 1

$91,104,119,136$

(to determine whether they are in proportion)

If $\frac{a}{b}=\frac{c}{d}$ (numbers are said to be in proportion)

$\frac{a}{b}=\frac{91}{104}=0.875$

$\frac{c}{d}=\frac{119}{136}=0.875$

Since, $\frac{a}{b}=\frac{c}{d}$

(Therefore, numbers are said to be in proportion).