Finding the Fourth Proportional to 138,238,640.33, 207,356,540.27 and 79,909,203.62
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Solution
The fourth proportional to 138,238,640.33, 207,356,540.27 and 79,909,203.62 is: 119,862,984.46
Step by Step Solution
- Step 1: Write the proportion equation
138,238,640.33 : 207,356,540.27 = 79,909,203.62 : x - Step 2: Convert to fraction form
138,238,640.33/207,356,540.27 = 79,909,203.62/x - Step 3: Cross multiply
138,238,640.33x = 207,356,540.27 × 79,909,203.62 - Step 4: Simplify right side
138,238,640.33x = 16,569,695,996,937,828 - Step 5: Solve for x
x = 16,569,695,996,937,828/138,238,640.33 - Step 6: Final answer
x = 119,862,984.46
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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.