Finding the Fourth Proportional to 138,398,412.70, 207,455,901.45 and 80,861,067.10
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Solution
The fourth proportional to 138,398,412.70, 207,455,901.45 and 80,861,067.10 is: 121,208,800.30
Step by Step Solution
- Step 1: Write the proportion equation
138,398,412.70 : 207,455,901.45 = 80,861,067.10 : x - Step 2: Convert to fraction form
138,398,412.70/207,455,901.45 = 80,861,067.10/x - Step 3: Cross multiply
138,398,412.70x = 207,455,901.45 × 80,861,067.10 - Step 4: Simplify right side
138,398,412.70x = 16,775,105,567,439,436 - Step 5: Solve for x
x = 16,775,105,567,439,436/138,398,412.70 - Step 6: Final answer
x = 121,208,800.30
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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.