Home / 138,279.62-207,423.52-54,036.38

Finding the Fourth Proportional to 138,279.62, 207,423.52 and 54,036.38

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Solution

The fourth proportional to 138,279.62, 207,423.52 and 54,036.38 is: 81,056.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,279.62 : 207,423.52 = 54,036.38 : x
  2. Step 2: Convert to fraction form
    138,279.62/207,423.52 = 54,036.38/x
  3. Step 3: Cross multiply
    138,279.62x = 207,423.52 × 54,036.38
  4. Step 4: Simplify right side
    138,279.62x = 11,208,416,147.66
  5. Step 5: Solve for x
    x = 11,208,416,147.66/138,279.62
  6. Step 6: Final answer
    x = 81,056.17

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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.