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Finding the Fourth Proportional to 169.59, 234.05 and 136.74

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Solution

The fourth proportional to 169.59, 234.05 and 136.74 is: 188.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.59 : 234.05 = 136.74 : x
  2. Step 2: Convert to fraction form
    169.59/234.05 = 136.74/x
  3. Step 3: Cross multiply
    169.59x = 234.05 × 136.74
  4. Step 4: Simplify right side
    169.59x = 32,003.17
  5. Step 5: Solve for x
    x = 32,003.17/169.59
  6. Step 6: Final answer
    x = 188.71

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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.