Home / 138,131.12-207,176.17-38,280.90

Finding the Fourth Proportional to 138,131.12, 207,176.17 and 38,280.90

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Solution

The fourth proportional to 138,131.12, 207,176.17 and 38,280.90 is: 57,415.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,131.12 : 207,176.17 = 38,280.90 : x
  2. Step 2: Convert to fraction form
    138,131.12/207,176.17 = 38,280.90/x
  3. Step 3: Cross multiply
    138,131.12x = 207,176.17 × 38,280.90
  4. Step 4: Simplify right side
    138,131.12x = 7,930,890,246.15
  5. Step 5: Solve for x
    x = 7,930,890,246.15/138,131.12
  6. Step 6: Final answer
    x = 57,415.67

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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.