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Finding the Fourth Proportional to 136.79, 190.07 and 135.37

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Solution

The fourth proportional to 136.79, 190.07 and 135.37 is: 188.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.79 : 190.07 = 135.37 : x
  2. Step 2: Convert to fraction form
    136.79/190.07 = 135.37/x
  3. Step 3: Cross multiply
    136.79x = 190.07 × 135.37
  4. Step 4: Simplify right side
    136.79x = 25,730.23
  5. Step 5: Solve for x
    x = 25,730.23/136.79
  6. Step 6: Final answer
    x = 188.10

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.