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Finding the Fourth Proportional to 187.62, 281.18 and 96.12

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Solution

The fourth proportional to 187.62, 281.18 and 96.12 is: 144.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.62 : 281.18 = 96.12 : x
  2. Step 2: Convert to fraction form
    187.62/281.18 = 96.12/x
  3. Step 3: Cross multiply
    187.62x = 281.18 × 96.12
  4. Step 4: Simplify right side
    187.62x = 27,027.60
  5. Step 5: Solve for x
    x = 27,027.60/187.62
  6. Step 6: Final answer
    x = 144.05

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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.