Home / 129,757.11-179,064.56-72,393.01

Finding the Fourth Proportional to 129,757.11, 179,064.56 and 72,393.01

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Solution

The fourth proportional to 129,757.11, 179,064.56 and 72,393.01 is: 99,902.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,757.11 : 179,064.56 = 72,393.01 : x
  2. Step 2: Convert to fraction form
    129,757.11/179,064.56 = 72,393.01/x
  3. Step 3: Cross multiply
    129,757.11x = 179,064.56 × 72,393.01
  4. Step 4: Simplify right side
    129,757.11x = 12,963,023,169.69
  5. Step 5: Solve for x
    x = 12,963,023,169.69/129,757.11
  6. Step 6: Final answer
    x = 99,902.22

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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.