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Finding the Fourth Proportional to 134.92, 202.12 and 117.40

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Solution

The fourth proportional to 134.92, 202.12 and 117.40 is: 175.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.92 : 202.12 = 117.40 : x
  2. Step 2: Convert to fraction form
    134.92/202.12 = 117.40/x
  3. Step 3: Cross multiply
    134.92x = 202.12 × 117.40
  4. Step 4: Simplify right side
    134.92x = 23,728.80
  5. Step 5: Solve for x
    x = 23,728.80/134.92
  6. Step 6: Final answer
    x = 175.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.