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Finding the Fourth Proportional to 136.43, 187.33 and 135.89

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Solution

The fourth proportional to 136.43, 187.33 and 135.89 is: 186.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.43 : 187.33 = 135.89 : x
  2. Step 2: Convert to fraction form
    136.43/187.33 = 135.89/x
  3. Step 3: Cross multiply
    136.43x = 187.33 × 135.89
  4. Step 4: Simplify right side
    136.43x = 25,455.00
  5. Step 5: Solve for x
    x = 25,455.00/136.43
  6. Step 6: Final answer
    x = 186.59

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.