Finding the Fourth Proportional to 91,906,947.70, 137,718,703.95 and 79,719,234.10
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Solution
The fourth proportional to 91,906,947.70, 137,718,703.95 and 79,719,234.10 is: 119,455,926.62
Step by Step Solution
- Step 1: Write the proportion equation
91,906,947.70 : 137,718,703.95 = 79,719,234.10 : x - Step 2: Convert to fraction form
91,906,947.70/137,718,703.95 = 79,719,234.10/x - Step 3: Cross multiply
91,906,947.70x = 137,718,703.95 × 79,719,234.10 - Step 4: Simplify right side
91,906,947.70x = 10,978,829,600,138,642 - Step 5: Solve for x
x = 10,978,829,600,138,642/91,906,947.70 - Step 6: Final answer
x = 119,455,926.62
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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.