Determine if the following ratio form a proportion
25 cm : 1 m :: ₹ 40 : ₹ 160

The correct answer is Yes

25 cm : 1 m

⇒ 25 cm : 100 cm = $\dfrac{1}{4}$


₹ 40 : ₹ 160

⇒ ₹ 40 : ₹ 160 = $\dfrac{40}{160}$ = $\dfrac{1}{4}$

∴ 25 cm : 1 m :: ₹ 40 : ₹ 160 are in proportion.