Finding the Fourth Proportional to 138,238,640.70, 207,356,540.83 and 79,909,203.99
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Solution
The fourth proportional to 138,238,640.70, 207,356,540.83 and 79,909,203.99 is: 119,862,985.02
Step by Step Solution
- Step 1: Write the proportion equation
138,238,640.70 : 207,356,540.83 = 79,909,203.99 : x - Step 2: Convert to fraction form
138,238,640.70/207,356,540.83 = 79,909,203.99/x - Step 3: Cross multiply
138,238,640.70x = 207,356,540.83 × 79,909,203.99 - Step 4: Simplify right side
138,238,640.70x = 16,569,696,119,645,458 - Step 5: Solve for x
x = 16,569,696,119,645,458/138,238,640.70 - Step 6: Final answer
x = 119,862,985.02
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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.