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Finding the Fourth Proportional to 129,797.56, 179,124.78 and 73,209.88

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Solution

The fourth proportional to 129,797.56, 179,124.78 and 73,209.88 is: 101,031.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,797.56 : 179,124.78 = 73,209.88 : x
  2. Step 2: Convert to fraction form
    129,797.56/179,124.78 = 73,209.88/x
  3. Step 3: Cross multiply
    129,797.56x = 179,124.78 × 73,209.88
  4. Step 4: Simplify right side
    129,797.56x = 13,113,703,648.83
  5. Step 5: Solve for x
    x = 13,113,703,648.83/129,797.56
  6. Step 6: Final answer
    x = 101,031.97

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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.