Home / 126,614.27-174,781.50-78,891.20

Finding the Fourth Proportional to 126,614.27, 174,781.50 and 78,891.20

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Solution

The fourth proportional to 126,614.27, 174,781.50 and 78,891.20 is: 108,903.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,614.27 : 174,781.50 = 78,891.20 : x
  2. Step 2: Convert to fraction form
    126,614.27/174,781.50 = 78,891.20/x
  3. Step 3: Cross multiply
    126,614.27x = 174,781.50 × 78,891.20
  4. Step 4: Simplify right side
    126,614.27x = 13,788,721,758.48
  5. Step 5: Solve for x
    x = 13,788,721,758.48/126,614.27
  6. Step 6: Final answer
    x = 108,903.38

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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.