Home / 129,882.12-179,235.57-72,522.33

Finding the Fourth Proportional to 129,882.12, 179,235.57 and 72,522.33

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Solution

The fourth proportional to 129,882.12, 179,235.57 and 72,522.33 is: 100,079.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,882.12 : 179,235.57 = 72,522.33 : x
  2. Step 2: Convert to fraction form
    129,882.12/179,235.57 = 72,522.33/x
  3. Step 3: Cross multiply
    129,882.12x = 179,235.57 × 72,522.33
  4. Step 4: Simplify right side
    129,882.12x = 12,998,581,155.28
  5. Step 5: Solve for x
    x = 12,998,581,155.28/129,882.12
  6. Step 6: Final answer
    x = 100,079.84

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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.