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Finding the Fourth Proportional to 133.96, 185 and 106.53

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Solution

The fourth proportional to 133.96, 185 and 106.53 is: 147.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.96 : 185 = 106.53 : x
  2. Step 2: Convert to fraction form
    133.96/185 = 106.53/x
  3. Step 3: Cross multiply
    133.96x = 185 × 106.53
  4. Step 4: Simplify right side
    133.96x = 19,708.05
  5. Step 5: Solve for x
    x = 19,708.05/133.96
  6. Step 6: Final answer
    x = 147.12

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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.