Home / 129,972.06-179,359.92-72,607.66

Finding the Fourth Proportional to 129,972.06, 179,359.92 and 72,607.66

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Solution

The fourth proportional to 129,972.06, 179,359.92 and 72,607.66 is: 100,197.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,972.06 : 179,359.92 = 72,607.66 : x
  2. Step 2: Convert to fraction form
    129,972.06/179,359.92 = 72,607.66/x
  3. Step 3: Cross multiply
    129,972.06x = 179,359.92 × 72,607.66
  4. Step 4: Simplify right side
    129,972.06x = 13,022,903,640.59
  5. Step 5: Solve for x
    x = 13,022,903,640.59/129,972.06
  6. Step 6: Final answer
    x = 100,197.72

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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.