Home / 138,635.10-207,951.98-54,335.70

Finding the Fourth Proportional to 138,635.10, 207,951.98 and 54,335.70

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Solution

The fourth proportional to 138,635.10, 207,951.98 and 54,335.70 is: 81,503.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,635.10 : 207,951.98 = 54,335.70 : x
  2. Step 2: Convert to fraction form
    138,635.10/207,951.98 = 54,335.70/x
  3. Step 3: Cross multiply
    138,635.10x = 207,951.98 × 54,335.70
  4. Step 4: Simplify right side
    138,635.10x = 11,299,216,128.01
  5. Step 5: Solve for x
    x = 11,299,216,128.01/138,635.10
  6. Step 6: Final answer
    x = 81,503.29

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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.