Home / 138,130.12-207,174.67-38,279.90

Finding the Fourth Proportional to 138,130.12, 207,174.67 and 38,279.90

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Solution

The fourth proportional to 138,130.12, 207,174.67 and 38,279.90 is: 57,414.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,130.12 : 207,174.67 = 38,279.90 : x
  2. Step 2: Convert to fraction form
    138,130.12/207,174.67 = 38,279.90/x
  3. Step 3: Cross multiply
    138,130.12x = 207,174.67 × 38,279.90
  4. Step 4: Simplify right side
    138,130.12x = 7,930,626,072.37
  5. Step 5: Solve for x
    x = 7,930,626,072.37/138,130.12
  6. Step 6: Final answer
    x = 57,414.17

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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.