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Finding the Fourth Proportional to 172,323.75, 258,504.17 and 72,494.10

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Solution

The fourth proportional to 172,323.75, 258,504.17 and 72,494.10 is: 108,748.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,323.75 : 258,504.17 = 72,494.10 : x
  2. Step 2: Convert to fraction form
    172,323.75/258,504.17 = 72,494.10/x
  3. Step 3: Cross multiply
    172,323.75x = 258,504.17 × 72,494.10
  4. Step 4: Simplify right side
    172,323.75x = 18,740,026,787.93
  5. Step 5: Solve for x
    x = 18,740,026,787.93/172,323.75
  6. Step 6: Final answer
    x = 108,748.95

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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.