Finding the Fourth Proportional to 99,765,136.80, 149,647,705.20 and 65,724,919.20
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Solution
The fourth proportional to 99,765,136.80, 149,647,705.20 and 65,724,919.20 is: 98,587,378.80
Step by Step Solution
- Step 1: Write the proportion equation
99,765,136.80 : 149,647,705.20 = 65,724,919.20 : x - Step 2: Convert to fraction form
99,765,136.80/149,647,705.20 = 65,724,919.20/x - Step 3: Cross multiply
99,765,136.80x = 149,647,705.20 × 65,724,919.20 - Step 4: Simplify right side
99,765,136.80x = 9,835,583,332,735,420 - Step 5: Solve for x
x = 9,835,583,332,735,420/99,765,136.80 - Step 6: Final answer
x = 98,587,378.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.