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Finding the Fourth Proportional to 172,860.53, 259,121.25 and 82,877.70

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Solution

The fourth proportional to 172,860.53, 259,121.25 and 82,877.70 is: 124,235.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,860.53 : 259,121.25 = 82,877.70 : x
  2. Step 2: Convert to fraction form
    172,860.53/259,121.25 = 82,877.70/x
  3. Step 3: Cross multiply
    172,860.53x = 259,121.25 × 82,877.70
  4. Step 4: Simplify right side
    172,860.53x = 21,475,373,221.13
  5. Step 5: Solve for x
    x = 21,475,373,221.13/172,860.53
  6. Step 6: Final answer
    x = 124,235.27

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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.