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Finding the Fourth Proportional to 136.31, 202.68 and 130.82

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Solution

The fourth proportional to 136.31, 202.68 and 130.82 is: 194.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.31 : 202.68 = 130.82 : x
  2. Step 2: Convert to fraction form
    136.31/202.68 = 130.82/x
  3. Step 3: Cross multiply
    136.31x = 202.68 × 130.82
  4. Step 4: Simplify right side
    136.31x = 26,513.58
  5. Step 5: Solve for x
    x = 26,513.58/136.31
  6. Step 6: Final answer
    x = 194.52

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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.