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Finding the Fourth Proportional to 135.62, 187.90 and 132.74

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Solution

The fourth proportional to 135.62, 187.90 and 132.74 is: 183.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.62 : 187.90 = 132.74 : x
  2. Step 2: Convert to fraction form
    135.62/187.90 = 132.74/x
  3. Step 3: Cross multiply
    135.62x = 187.90 × 132.74
  4. Step 4: Simplify right side
    135.62x = 24,941.18
  5. Step 5: Solve for x
    x = 24,941.18/135.62
  6. Step 6: Final answer
    x = 183.90

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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.