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Finding the Fourth Proportional to 136.27, 189.38 and 134.79

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Solution

The fourth proportional to 136.27, 189.38 and 134.79 is: 187.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.27 : 189.38 = 134.79 : x
  2. Step 2: Convert to fraction form
    136.27/189.38 = 134.79/x
  3. Step 3: Cross multiply
    136.27x = 189.38 × 134.79
  4. Step 4: Simplify right side
    136.27x = 25,526.53
  5. Step 5: Solve for x
    x = 25,526.53/136.27
  6. Step 6: Final answer
    x = 187.32

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.