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Finding the Fourth Proportional to 134.17, 202.15 and 121.35

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Solution

The fourth proportional to 134.17, 202.15 and 121.35 is: 182.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.17 : 202.15 = 121.35 : x
  2. Step 2: Convert to fraction form
    134.17/202.15 = 121.35/x
  3. Step 3: Cross multiply
    134.17x = 202.15 × 121.35
  4. Step 4: Simplify right side
    134.17x = 24,530.90
  5. Step 5: Solve for x
    x = 24,530.90/134.17
  6. Step 6: Final answer
    x = 182.83

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.