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Finding the Fourth Proportional to 181,366.54, 271,634.92 and 86,663.31

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Solution

The fourth proportional to 181,366.54, 271,634.92 and 86,663.31 is: 129,796.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,366.54 : 271,634.92 = 86,663.31 : x
  2. Step 2: Convert to fraction form
    181,366.54/271,634.92 = 86,663.31/x
  3. Step 3: Cross multiply
    181,366.54x = 271,634.92 × 86,663.31
  4. Step 4: Simplify right side
    181,366.54x = 23,540,781,278.79
  5. Step 5: Solve for x
    x = 23,540,781,278.79/181,366.54
  6. Step 6: Final answer
    x = 129,796.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.