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Finding the Fourth Proportional to 172,358.96, 258,467.68 and 65,781.73

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Solution

The fourth proportional to 172,358.96, 258,467.68 and 65,781.73 is: 98,645.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,358.96 : 258,467.68 = 65,781.73 : x
  2. Step 2: Convert to fraction form
    172,358.96/258,467.68 = 65,781.73/x
  3. Step 3: Cross multiply
    172,358.96x = 258,467.68 × 65,781.73
  4. Step 4: Simplify right side
    172,358.96x = 17,002,451,139.49
  5. Step 5: Solve for x
    x = 17,002,451,139.49/172,358.96
  6. Step 6: Final answer
    x = 98,645.59

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1.5x scale

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.