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Finding the Fourth Proportional to 136.32, 185.76 and 135.84

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Solution

The fourth proportional to 136.32, 185.76 and 135.84 is: 185.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.32 : 185.76 = 135.84 : x
  2. Step 2: Convert to fraction form
    136.32/185.76 = 135.84/x
  3. Step 3: Cross multiply
    136.32x = 185.76 × 135.84
  4. Step 4: Simplify right side
    136.32x = 25,233.64
  5. Step 5: Solve for x
    x = 25,233.64/136.32
  6. Step 6: Final answer
    x = 185.11

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.