Compute Fisher's Ideal Index No.

190.81

The correct answer is Option (3) → 190.81

For calculating base period and current period quantity we divide value by price.

Fisher's Method:

$P_{01} = \sqrt{\frac{\sum p_1q_0}{\sum p_0q_0} \times \frac{\sum p_1q_1}{\sum p_0q_1}} \times 100 = \sqrt{\frac{1276}{656} \times \frac{848}{453}} \times 100$

$= \sqrt{\frac{1082048}{297168}} \times 100$

$= \sqrt{3.641} \times 100 = 190.81$