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Finding the Fourth Proportional to 138,473.34, 207,745.03 and 38,633.46

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Solution

The fourth proportional to 138,473.34, 207,745.03 and 38,633.46 is: 57,959.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,473.34 : 207,745.03 = 38,633.46 : x
  2. Step 2: Convert to fraction form
    138,473.34/207,745.03 = 38,633.46/x
  3. Step 3: Cross multiply
    138,473.34x = 207,745.03 × 38,633.46
  4. Step 4: Simplify right side
    138,473.34x = 8,025,909,306.70
  5. Step 5: Solve for x
    x = 8,025,909,306.70/138,473.34
  6. Step 6: Final answer
    x = 57,959.96

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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.