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Finding the Fourth Proportional to 138,619.33, 207,892.10 and 38,773.33

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Solution

The fourth proportional to 138,619.33, 207,892.10 and 38,773.33 is: 58,149.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,619.33 : 207,892.10 = 38,773.33 : x
  2. Step 2: Convert to fraction form
    138,619.33/207,892.10 = 38,773.33/x
  3. Step 3: Cross multiply
    138,619.33x = 207,892.10 × 38,773.33
  4. Step 4: Simplify right side
    138,619.33x = 8,060,668,803.83
  5. Step 5: Solve for x
    x = 8,060,668,803.83/138,619.33
  6. Step 6: Final answer
    x = 58,149.67

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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.