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Finding the Fourth Proportional to 118.45, 176.42 and 114.20

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Solution

The fourth proportional to 118.45, 176.42 and 114.20 is: 170.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.45 : 176.42 = 114.20 : x
  2. Step 2: Convert to fraction form
    118.45/176.42 = 114.20/x
  3. Step 3: Cross multiply
    118.45x = 176.42 × 114.20
  4. Step 4: Simplify right side
    118.45x = 20,147.16
  5. Step 5: Solve for x
    x = 20,147.16/118.45
  6. Step 6: Final answer
    x = 170.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.