Home / 129,859.97-179,206.04-72,495.97

Finding the Fourth Proportional to 129,859.97, 179,206.04 and 72,495.97

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Solution

The fourth proportional to 129,859.97, 179,206.04 and 72,495.97 is: 100,044.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,859.97 : 179,206.04 = 72,495.97 : x
  2. Step 2: Convert to fraction form
    129,859.97/179,206.04 = 72,495.97/x
  3. Step 3: Cross multiply
    129,859.97x = 179,206.04 × 72,495.97
  4. Step 4: Simplify right side
    129,859.97x = 12,991,715,432.88
  5. Step 5: Solve for x
    x = 12,991,715,432.88/129,859.97
  6. Step 6: Final answer
    x = 100,044.04

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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.