Home / 126,418.40-174,456.96-72,700.88

Finding the Fourth Proportional to 126,418.40, 174,456.96 and 72,700.88

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Solution

The fourth proportional to 126,418.40, 174,456.96 and 72,700.88 is: 100,326.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,418.40 : 174,456.96 = 72,700.88 : x
  2. Step 2: Convert to fraction form
    126,418.40/174,456.96 = 72,700.88/x
  3. Step 3: Cross multiply
    126,418.40x = 174,456.96 × 72,700.88
  4. Step 4: Simplify right side
    126,418.40x = 12,683,174,514.12
  5. Step 5: Solve for x
    x = 12,683,174,514.12/126,418.40
  6. Step 6: Final answer
    x = 100,326.97

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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.