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Finding the Fourth Proportional to 136.79, 204.14 and 122.19

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Solution

The fourth proportional to 136.79, 204.14 and 122.19 is: 182.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.79 : 204.14 = 122.19 : x
  2. Step 2: Convert to fraction form
    136.79/204.14 = 122.19/x
  3. Step 3: Cross multiply
    136.79x = 204.14 × 122.19
  4. Step 4: Simplify right side
    136.79x = 24,943.26
  5. Step 5: Solve for x
    x = 24,943.26/136.79
  6. Step 6: Final answer
    x = 182.34

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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.