Home / 129,882.40-179,235.99-72,522.70

Finding the Fourth Proportional to 129,882.40, 179,235.99 and 72,522.70

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Solution

The fourth proportional to 129,882.40, 179,235.99 and 72,522.70 is: 100,080.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,882.40 : 179,235.99 = 72,522.70 : x
  2. Step 2: Convert to fraction form
    129,882.40/179,235.99 = 72,522.70/x
  3. Step 3: Cross multiply
    129,882.40x = 179,235.99 × 72,522.70
  4. Step 4: Simplify right side
    129,882.40x = 12,998,677,931.97
  5. Step 5: Solve for x
    x = 12,998,677,931.97/129,882.40
  6. Step 6: Final answer
    x = 100,080.36

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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.