Home / 391,976.20-587,967.54-125,738.92

Finding the Fourth Proportional to 391,976.20, 587,967.54 and 125,738.92

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Solution

The fourth proportional to 391,976.20, 587,967.54 and 125,738.92 is: 188,609.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,976.20 : 587,967.54 = 125,738.92 : x
  2. Step 2: Convert to fraction form
    391,976.20/587,967.54 = 125,738.92/x
  3. Step 3: Cross multiply
    391,976.20x = 587,967.54 × 125,738.92
  4. Step 4: Simplify right side
    391,976.20x = 73,930,403,474.66
  5. Step 5: Solve for x
    x = 73,930,403,474.66/391,976.20
  6. Step 6: Final answer
    x = 188,609.42

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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.