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Finding the Fourth Proportional to 129,758.36, 179,035.90 and 73,158.80

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Solution

The fourth proportional to 129,758.36, 179,035.90 and 73,158.80 is: 100,941.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,758.36 : 179,035.90 = 73,158.80 : x
  2. Step 2: Convert to fraction form
    129,758.36/179,035.90 = 73,158.80/x
  3. Step 3: Cross multiply
    129,758.36x = 179,035.90 × 73,158.80
  4. Step 4: Simplify right side
    129,758.36x = 13,098,051,600.92
  5. Step 5: Solve for x
    x = 13,098,051,600.92/129,758.36
  6. Step 6: Final answer
    x = 100,941.87

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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.