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Finding the Fourth Proportional to 172,335.76, 258,522.16 and 72,506.12

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Solution

The fourth proportional to 172,335.76, 258,522.16 and 72,506.12 is: 108,766.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,335.76 : 258,522.16 = 72,506.12 : x
  2. Step 2: Convert to fraction form
    172,335.76/258,522.16 = 72,506.12/x
  3. Step 3: Cross multiply
    172,335.76x = 258,522.16 × 72,506.12
  4. Step 4: Simplify right side
    172,335.76x = 18,744,438,755.62
  5. Step 5: Solve for x
    x = 18,744,438,755.62/172,335.76
  6. Step 6: Final answer
    x = 108,766.97

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1.5x scale

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.