Home / 138,171.61-207,257.75-38,337.15

Finding the Fourth Proportional to 138,171.61, 207,257.75 and 38,337.15

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Solution

The fourth proportional to 138,171.61, 207,257.75 and 38,337.15 is: 57,505.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,171.61 : 207,257.75 = 38,337.15 : x
  2. Step 2: Convert to fraction form
    138,171.61/207,257.75 = 38,337.15/x
  3. Step 3: Cross multiply
    138,171.61x = 207,257.75 × 38,337.15
  4. Step 4: Simplify right side
    138,171.61x = 7,945,671,450.41
  5. Step 5: Solve for x
    x = 7,945,671,450.41/138,171.61
  6. Step 6: Final answer
    x = 57,505.82

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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.