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Finding the Fourth Proportional to 118.76, 177.09 and 104.36

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Solution

The fourth proportional to 118.76, 177.09 and 104.36 is: 155.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.76 : 177.09 = 104.36 : x
  2. Step 2: Convert to fraction form
    118.76/177.09 = 104.36/x
  3. Step 3: Cross multiply
    118.76x = 177.09 × 104.36
  4. Step 4: Simplify right side
    118.76x = 18,481.11
  5. Step 5: Solve for x
    x = 18,481.11/118.76
  6. Step 6: Final answer
    x = 155.62

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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.