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Finding the Fourth Proportional to 160.19, 239.92 and 87.88

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Solution

The fourth proportional to 160.19, 239.92 and 87.88 is: 131.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.19 : 239.92 = 87.88 : x
  2. Step 2: Convert to fraction form
    160.19/239.92 = 87.88/x
  3. Step 3: Cross multiply
    160.19x = 239.92 × 87.88
  4. Step 4: Simplify right side
    160.19x = 21,084.17
  5. Step 5: Solve for x
    x = 21,084.17/160.19
  6. Step 6: Final answer
    x = 131.62

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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.