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Finding the Fourth Proportional to 131,875.97, 197,961.59 and 87,589.22

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Solution

The fourth proportional to 131,875.97, 197,961.59 and 87,589.22 is: 131,481.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,875.97 : 197,961.59 = 87,589.22 : x
  2. Step 2: Convert to fraction form
    131,875.97/197,961.59 = 87,589.22/x
  3. Step 3: Cross multiply
    131,875.97x = 197,961.59 × 87,589.22
  4. Step 4: Simplify right side
    131,875.97x = 17,339,299,830.31
  5. Step 5: Solve for x
    x = 17,339,299,830.31/131,875.97
  6. Step 6: Final answer
    x = 131,481.88

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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.