Home / 138,691.83-208,043.67-54,470.25

Finding the Fourth Proportional to 138,691.83, 208,043.67 and 54,470.25

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Solution

The fourth proportional to 138,691.83, 208,043.67 and 54,470.25 is: 81,707.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,691.83 : 208,043.67 = 54,470.25 : x
  2. Step 2: Convert to fraction form
    138,691.83/208,043.67 = 54,470.25/x
  3. Step 3: Cross multiply
    138,691.83x = 208,043.67 × 54,470.25
  4. Step 4: Simplify right side
    138,691.83x = 11,332,189,675.60
  5. Step 5: Solve for x
    x = 11,332,189,675.60/138,691.83
  6. Step 6: Final answer
    x = 81,707.70

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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.