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Finding the Fourth Proportional to 126,393.92, 174,432.80 and 72,695.78

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Solution

The fourth proportional to 126,393.92, 174,432.80 and 72,695.78 is: 100,325.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,393.92 : 174,432.80 = 72,695.78 : x
  2. Step 2: Convert to fraction form
    126,393.92/174,432.80 = 72,695.78/x
  3. Step 3: Cross multiply
    126,393.92x = 174,432.80 × 72,695.78
  4. Step 4: Simplify right side
    126,393.92x = 12,680,528,453.58
  5. Step 5: Solve for x
    x = 12,680,528,453.58/126,393.92
  6. Step 6: Final answer
    x = 100,325.46

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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.