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Finding the Fourth Proportional to 118.60, 177.78 and 50.13

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Solution

The fourth proportional to 118.60, 177.78 and 50.13 is: 75.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.60 : 177.78 = 50.13 : x
  2. Step 2: Convert to fraction form
    118.60/177.78 = 50.13/x
  3. Step 3: Cross multiply
    118.60x = 177.78 × 50.13
  4. Step 4: Simplify right side
    118.60x = 8,912.11
  5. Step 5: Solve for x
    x = 8,912.11/118.60
  6. Step 6: Final answer
    x = 75.14

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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.