Home / 129,747.06-179,046.18-72,383.40

Finding the Fourth Proportional to 129,747.06, 179,046.18 and 72,383.40

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Solution

The fourth proportional to 129,747.06, 179,046.18 and 72,383.40 is: 99,886.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,747.06 : 179,046.18 = 72,383.40 : x
  2. Step 2: Convert to fraction form
    129,747.06/179,046.18 = 72,383.40/x
  3. Step 3: Cross multiply
    129,747.06x = 179,046.18 × 72,383.40
  4. Step 4: Simplify right side
    129,747.06x = 12,959,971,265.41
  5. Step 5: Solve for x
    x = 12,959,971,265.41/129,747.06
  6. Step 6: Final answer
    x = 99,886.43

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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.