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Finding the Fourth Proportional to 136.70, 187.36 and 135.08

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Solution

The fourth proportional to 136.70, 187.36 and 135.08 is: 185.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.70 : 187.36 = 135.08 : x
  2. Step 2: Convert to fraction form
    136.70/187.36 = 135.08/x
  3. Step 3: Cross multiply
    136.70x = 187.36 × 135.08
  4. Step 4: Simplify right side
    136.70x = 25,308.59
  5. Step 5: Solve for x
    x = 25,308.59/136.70
  6. Step 6: Final answer
    x = 185.14

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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.