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Finding the Fourth Proportional to 136.77, 204.06 and 129.62

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Solution

The fourth proportional to 136.77, 204.06 and 129.62 is: 193.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.77 : 204.06 = 129.62 : x
  2. Step 2: Convert to fraction form
    136.77/204.06 = 129.62/x
  3. Step 3: Cross multiply
    136.77x = 204.06 × 129.62
  4. Step 4: Simplify right side
    136.77x = 26,449.24
  5. Step 5: Solve for x
    x = 26,449.24/136.77
  6. Step 6: Final answer
    x = 193.38

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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.