Home / 129,844.11-179,184.13-72,480.12

Finding the Fourth Proportional to 129,844.11, 179,184.13 and 72,480.12

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Solution

The fourth proportional to 129,844.11, 179,184.13 and 72,480.12 is: 100,022.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,844.11 : 179,184.13 = 72,480.12 : x
  2. Step 2: Convert to fraction form
    129,844.11/179,184.13 = 72,480.12/x
  3. Step 3: Cross multiply
    129,844.11x = 179,184.13 × 72,480.12
  4. Step 4: Simplify right side
    129,844.11x = 12,987,287,244.50
  5. Step 5: Solve for x
    x = 12,987,287,244.50/129,844.11
  6. Step 6: Final answer
    x = 100,022.15

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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.