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Finding the Fourth Proportional to 172,396.20, 258,593.82 and 54,068.20

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Solution

The fourth proportional to 172,396.20, 258,593.82 and 54,068.20 is: 81,102.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,396.20 : 258,593.82 = 54,068.20 : x
  2. Step 2: Convert to fraction form
    172,396.20/258,593.82 = 54,068.20/x
  3. Step 3: Cross multiply
    172,396.20x = 258,593.82 × 54,068.20
  4. Step 4: Simplify right side
    172,396.20x = 13,981,702,378.52
  5. Step 5: Solve for x
    x = 13,981,702,378.52/172,396.20
  6. Step 6: Final answer
    x = 81,102.15

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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.