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Finding the Fourth Proportional to 172,294.72, 258,357.84 and 71,073.92

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Solution

The fourth proportional to 172,294.72, 258,357.84 and 71,073.92 is: 106,576.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,294.72 : 258,357.84 = 71,073.92 : x
  2. Step 2: Convert to fraction form
    172,294.72/258,357.84 = 71,073.92/x
  3. Step 3: Cross multiply
    172,294.72x = 258,357.84 × 71,073.92
  4. Step 4: Simplify right side
    172,294.72x = 18,362,504,451.53
  5. Step 5: Solve for x
    x = 18,362,504,451.53/172,294.72
  6. Step 6: Final answer
    x = 106,576.13

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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.