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Finding the Fourth Proportional to 118.90, 177.73 and 116.02

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Solution

The fourth proportional to 118.90, 177.73 and 116.02 is: 173.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.90 : 177.73 = 116.02 : x
  2. Step 2: Convert to fraction form
    118.90/177.73 = 116.02/x
  3. Step 3: Cross multiply
    118.90x = 177.73 × 116.02
  4. Step 4: Simplify right side
    118.90x = 20,620.23
  5. Step 5: Solve for x
    x = 20,620.23/118.90
  6. Step 6: Final answer
    x = 173.43

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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.