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Finding the Fourth Proportional to 135.42, 202.59 and 111.66

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Solution

The fourth proportional to 135.42, 202.59 and 111.66 is: 167.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.42 : 202.59 = 111.66 : x
  2. Step 2: Convert to fraction form
    135.42/202.59 = 111.66/x
  3. Step 3: Cross multiply
    135.42x = 202.59 × 111.66
  4. Step 4: Simplify right side
    135.42x = 22,621.20
  5. Step 5: Solve for x
    x = 22,621.20/135.42
  6. Step 6: Final answer
    x = 167.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.