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Finding the Fourth Proportional to 172,911.84, 259,390.42 and 67,717.14

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Solution

The fourth proportional to 172,911.84, 259,390.42 and 67,717.14 is: 101,584.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,911.84 : 259,390.42 = 67,717.14 : x
  2. Step 2: Convert to fraction form
    172,911.84/259,390.42 = 67,717.14/x
  3. Step 3: Cross multiply
    172,911.84x = 259,390.42 × 67,717.14
  4. Step 4: Simplify right side
    172,911.84x = 17,565,177,385.80
  5. Step 5: Solve for x
    x = 17,565,177,385.80/172,911.84
  6. Step 6: Final answer
    x = 101,584.58

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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.