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Finding the Fourth Proportional to 117,141.70, 161,654.86 and 63,425.61

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Solution

The fourth proportional to 117,141.70, 161,654.86 and 63,425.61 is: 87,526.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,141.70 : 161,654.86 = 63,425.61 : x
  2. Step 2: Convert to fraction form
    117,141.70/161,654.86 = 63,425.61/x
  3. Step 3: Cross multiply
    117,141.70x = 161,654.86 × 63,425.61
  4. Step 4: Simplify right side
    117,141.70x = 10,253,058,104.96
  5. Step 5: Solve for x
    x = 10,253,058,104.96/117,141.70
  6. Step 6: Final answer
    x = 87,526.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.