Finding the Fourth Proportional to 128,304,331.20, 192,371,479.20 and 70,824,139.20
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Solution
The fourth proportional to 128,304,331.20, 192,371,479.20 and 70,824,139.20 is: 106,189,278.99
Step by Step Solution
- Step 1: Write the proportion equation
128,304,331.20 : 192,371,479.20 = 70,824,139.20 : x - Step 2: Convert to fraction form
128,304,331.20/192,371,479.20 = 70,824,139.20/x - Step 3: Cross multiply
128,304,331.20x = 192,371,479.20 × 70,824,139.20 - Step 4: Simplify right side
128,304,331.20x = 13,624,544,420,970,704 - Step 5: Solve for x
x = 13,624,544,420,970,704/128,304,331.20 - Step 6: Final answer
x = 106,189,278.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.