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Finding the Fourth Proportional to 138,854.34, 208,375.02 and 59,976.54

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Solution

The fourth proportional to 138,854.34, 208,375.02 and 59,976.54 is: 90,005.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,854.34 : 208,375.02 = 59,976.54 : x
  2. Step 2: Convert to fraction form
    138,854.34/208,375.02 = 59,976.54/x
  3. Step 3: Cross multiply
    138,854.34x = 208,375.02 × 59,976.54
  4. Step 4: Simplify right side
    138,854.34x = 12,497,612,722.03
  5. Step 5: Solve for x
    x = 12,497,612,722.03/138,854.34
  6. Step 6: Final answer
    x = 90,005.20

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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.