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Finding the Fourth Proportional to 134.73, 185.76 and 85.50

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Solution

The fourth proportional to 134.73, 185.76 and 85.50 is: 117.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.73 : 185.76 = 85.50 : x
  2. Step 2: Convert to fraction form
    134.73/185.76 = 85.50/x
  3. Step 3: Cross multiply
    134.73x = 185.76 × 85.50
  4. Step 4: Simplify right side
    134.73x = 15,882.48
  5. Step 5: Solve for x
    x = 15,882.48/134.73
  6. Step 6: Final answer
    x = 117.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.