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Finding the Fourth Proportional to 129,763.35, 179,042.79 and 73,163.79

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Solution

The fourth proportional to 129,763.35, 179,042.79 and 73,163.79 is: 100,948.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,763.35 : 179,042.79 = 73,163.79 : x
  2. Step 2: Convert to fraction form
    129,763.35/179,042.79 = 73,163.79/x
  3. Step 3: Cross multiply
    129,763.35x = 179,042.79 × 73,163.79
  4. Step 4: Simplify right side
    129,763.35x = 13,099,449,088.57
  5. Step 5: Solve for x
    x = 13,099,449,088.57/129,763.35
  6. Step 6: Final answer
    x = 100,948.76

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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.