Home / 126,789.38-174,756.76-101,213.78

Finding the Fourth Proportional to 126,789.38, 174,756.76 and 101,213.78

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Solution

The fourth proportional to 126,789.38, 174,756.76 and 101,213.78 is: 139,505.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,789.38 : 174,756.76 = 101,213.78 : x
  2. Step 2: Convert to fraction form
    126,789.38/174,756.76 = 101,213.78/x
  3. Step 3: Cross multiply
    126,789.38x = 174,756.76 × 101,213.78
  4. Step 4: Simplify right side
    126,789.38x = 17,687,792,260.15
  5. Step 5: Solve for x
    x = 17,687,792,260.15/126,789.38
  6. Step 6: Final answer
    x = 139,505.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.