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Finding the Fourth Proportional to 171,876.88, 258,003.72 and 136,565.20

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Solution

The fourth proportional to 171,876.88, 258,003.72 and 136,565.20 is: 204,997.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,876.88 : 258,003.72 = 136,565.20 : x
  2. Step 2: Convert to fraction form
    171,876.88/258,003.72 = 136,565.20/x
  3. Step 3: Cross multiply
    171,876.88x = 258,003.72 × 136,565.20
  4. Step 4: Simplify right side
    171,876.88x = 35,234,329,622.54
  5. Step 5: Solve for x
    x = 35,234,329,622.54/171,876.88
  6. Step 6: Final answer
    x = 204,997.49

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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.