Home / 126,891.76-190,423.77-67,769.86

Finding the Fourth Proportional to 126,891.76, 190,423.77 and 67,769.86

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Solution

The fourth proportional to 126,891.76, 190,423.77 and 67,769.86 is: 101,700.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,891.76 : 190,423.77 = 67,769.86 : x
  2. Step 2: Convert to fraction form
    126,891.76/190,423.77 = 67,769.86/x
  3. Step 3: Cross multiply
    126,891.76x = 190,423.77 × 67,769.86
  4. Step 4: Simplify right side
    126,891.76x = 12,904,992,233.57
  5. Step 5: Solve for x
    x = 12,904,992,233.57/126,891.76
  6. Step 6: Final answer
    x = 101,700.79

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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.