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Finding the Fourth Proportional to 156,691.60, 235,067.32 and 51,540.88

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Solution

The fourth proportional to 156,691.60, 235,067.32 and 51,540.88 is: 77,321.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,691.60 : 235,067.32 = 51,540.88 : x
  2. Step 2: Convert to fraction form
    156,691.60/235,067.32 = 51,540.88/x
  3. Step 3: Cross multiply
    156,691.60x = 235,067.32 × 51,540.88
  4. Step 4: Simplify right side
    156,691.60x = 12,115,576,532.04
  5. Step 5: Solve for x
    x = 12,115,576,532.04/156,691.60
  6. Step 6: Final answer
    x = 77,321.16

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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.