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Finding the Fourth Proportional to 136.72, 188.94 and 110.44

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Solution

The fourth proportional to 136.72, 188.94 and 110.44 is: 152.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.72 : 188.94 = 110.44 : x
  2. Step 2: Convert to fraction form
    136.72/188.94 = 110.44/x
  3. Step 3: Cross multiply
    136.72x = 188.94 × 110.44
  4. Step 4: Simplify right side
    136.72x = 20,866.53
  5. Step 5: Solve for x
    x = 20,866.53/136.72
  6. Step 6: Final answer
    x = 152.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.