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Finding the Fourth Proportional to 172,949.73, 259,474.82 and 71,729.22

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Solution

The fourth proportional to 172,949.73, 259,474.82 and 71,729.22 is: 107,614.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,949.73 : 259,474.82 = 71,729.22 : x
  2. Step 2: Convert to fraction form
    172,949.73/259,474.82 = 71,729.22/x
  3. Step 3: Cross multiply
    172,949.73x = 259,474.82 × 71,729.22
  4. Step 4: Simplify right side
    172,949.73x = 18,611,926,448.24
  5. Step 5: Solve for x
    x = 18,611,926,448.24/172,949.73
  6. Step 6: Final answer
    x = 107,614.66

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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.