Home / 126,105.62-188,824.71-76,118.90

Finding the Fourth Proportional to 126,105.62, 188,824.71 and 76,118.90

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Solution

The fourth proportional to 126,105.62, 188,824.71 and 76,118.90 is: 113,976.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,105.62 : 188,824.71 = 76,118.90 : x
  2. Step 2: Convert to fraction form
    126,105.62/188,824.71 = 76,118.90/x
  3. Step 3: Cross multiply
    126,105.62x = 188,824.71 × 76,118.90
  4. Step 4: Simplify right side
    126,105.62x = 14,373,129,218.02
  5. Step 5: Solve for x
    x = 14,373,129,218.02/126,105.62
  6. Step 6: Final answer
    x = 113,976.91

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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.