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Finding the Fourth Proportional to 116,757.60, 161,247.60 and 91,789.92

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Solution

The fourth proportional to 116,757.60, 161,247.60 and 91,789.92 is: 126,766.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,757.60 : 161,247.60 = 91,789.92 : x
  2. Step 2: Convert to fraction form
    116,757.60/161,247.60 = 91,789.92/x
  3. Step 3: Cross multiply
    116,757.60x = 161,247.60 × 91,789.92
  4. Step 4: Simplify right side
    116,757.60x = 14,800,904,304.19
  5. Step 5: Solve for x
    x = 14,800,904,304.19/116,757.60
  6. Step 6: Final answer
    x = 126,766.09

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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.