Home / 138,437.30-207,673.25-54,186.59

Finding the Fourth Proportional to 138,437.30, 207,673.25 and 54,186.59

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Solution

The fourth proportional to 138,437.30, 207,673.25 and 54,186.59 is: 81,286.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,437.30 : 207,673.25 = 54,186.59 : x
  2. Step 2: Convert to fraction form
    138,437.30/207,673.25 = 54,186.59/x
  3. Step 3: Cross multiply
    138,437.30x = 207,673.25 × 54,186.59
  4. Step 4: Simplify right side
    138,437.30x = 11,253,103,942.42
  5. Step 5: Solve for x
    x = 11,253,103,942.42/138,437.30
  6. Step 6: Final answer
    x = 81,286.65

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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.