Home / 138,974.18-208,740.24-82,923.68

Finding the Fourth Proportional to 138,974.18, 208,740.24 and 82,923.68

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Solution

The fourth proportional to 138,974.18, 208,740.24 and 82,923.68 is: 124,551.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,974.18 : 208,740.24 = 82,923.68 : x
  2. Step 2: Convert to fraction form
    138,974.18/208,740.24 = 82,923.68/x
  3. Step 3: Cross multiply
    138,974.18x = 208,740.24 × 82,923.68
  4. Step 4: Simplify right side
    138,974.18x = 17,309,508,864.88
  5. Step 5: Solve for x
    x = 17,309,508,864.88/138,974.18
  6. Step 6: Final answer
    x = 124,551.98

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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.