Home / 129,760.85-179,069.69-73,171.83

Finding the Fourth Proportional to 129,760.85, 179,069.69 and 73,171.83

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Solution

The fourth proportional to 129,760.85, 179,069.69 and 73,171.83 is: 100,976.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,760.85 : 179,069.69 = 73,171.83 : x
  2. Step 2: Convert to fraction form
    129,760.85/179,069.69 = 73,171.83/x
  3. Step 3: Cross multiply
    129,760.85x = 179,069.69 × 73,171.83
  4. Step 4: Simplify right side
    129,760.85x = 13,102,856,548.97
  5. Step 5: Solve for x
    x = 13,102,856,548.97/129,760.85
  6. Step 6: Final answer
    x = 100,976.96

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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.