Home / 129,728.25-179,025.17-72,371.27

Finding the Fourth Proportional to 129,728.25, 179,025.17 and 72,371.27

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Solution

The fourth proportional to 129,728.25, 179,025.17 and 72,371.27 is: 99,872.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,728.25 : 179,025.17 = 72,371.27 : x
  2. Step 2: Convert to fraction form
    129,728.25/179,025.17 = 72,371.27/x
  3. Step 3: Cross multiply
    129,728.25x = 179,025.17 × 72,371.27
  4. Step 4: Simplify right side
    129,728.25x = 12,956,279,000.57
  5. Step 5: Solve for x
    x = 12,956,279,000.57/129,728.25
  6. Step 6: Final answer
    x = 99,872.46

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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.