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Finding the Fourth Proportional to 136.54, 187.20 and 133.10

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Solution

The fourth proportional to 136.54, 187.20 and 133.10 is: 182.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.54 : 187.20 = 133.10 : x
  2. Step 2: Convert to fraction form
    136.54/187.20 = 133.10/x
  3. Step 3: Cross multiply
    136.54x = 187.20 × 133.10
  4. Step 4: Simplify right side
    136.54x = 24,916.32
  5. Step 5: Solve for x
    x = 24,916.32/136.54
  6. Step 6: Final answer
    x = 182.48

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.