Home / 129,710.28-179,000.19-73,121.66

Finding the Fourth Proportional to 129,710.28, 179,000.19 and 73,121.66

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Solution

The fourth proportional to 129,710.28, 179,000.19 and 73,121.66 is: 100,907.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,710.28 : 179,000.19 = 73,121.66 : x
  2. Step 2: Convert to fraction form
    129,710.28/179,000.19 = 73,121.66/x
  3. Step 3: Cross multiply
    129,710.28x = 179,000.19 × 73,121.66
  4. Step 4: Simplify right side
    129,710.28x = 13,088,790,138.11
  5. Step 5: Solve for x
    x = 13,088,790,138.11/129,710.28
  6. Step 6: Final answer
    x = 100,907.89

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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.