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Finding the Fourth Proportional to 172,933.38, 259,450.30 and 71,712.87

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Solution

The fourth proportional to 172,933.38, 259,450.30 and 71,712.87 is: 107,590.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,933.38 : 259,450.30 = 71,712.87 : x
  2. Step 2: Convert to fraction form
    172,933.38/259,450.30 = 71,712.87/x
  3. Step 3: Cross multiply
    172,933.38x = 259,450.30 × 71,712.87
  4. Step 4: Simplify right side
    172,933.38x = 18,605,924,752.06
  5. Step 5: Solve for x
    x = 18,605,924,752.06/172,933.38
  6. Step 6: Final answer
    x = 107,590.13

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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.