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Finding the Fourth Proportional to 129,767.80, 194,658.10 and 67,559.80

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Solution

The fourth proportional to 129,767.80, 194,658.10 and 67,559.80 is: 101,343.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,767.80 : 194,658.10 = 67,559.80 : x
  2. Step 2: Convert to fraction form
    129,767.80/194,658.10 = 67,559.80/x
  3. Step 3: Cross multiply
    129,767.80x = 194,658.10 × 67,559.80
  4. Step 4: Simplify right side
    129,767.80x = 13,151,062,304.38
  5. Step 5: Solve for x
    x = 13,151,062,304.38/129,767.80
  6. Step 6: Final answer
    x = 101,343.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.