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Finding the Fourth Proportional to 129,687.88, 194,551.94 and 54,808.35

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Solution

The fourth proportional to 129,687.88, 194,551.94 and 54,808.35 is: 82,221.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,687.88 : 194,551.94 = 54,808.35 : x
  2. Step 2: Convert to fraction form
    129,687.88/194,551.94 = 54,808.35/x
  3. Step 3: Cross multiply
    129,687.88x = 194,551.94 × 54,808.35
  4. Step 4: Simplify right side
    129,687.88x = 10,663,070,957.72
  5. Step 5: Solve for x
    x = 10,663,070,957.72/129,687.88
  6. Step 6: Final answer
    x = 82,221.03

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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.