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Finding the Fourth Proportional to 135.74, 187.01 and 111.04

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Solution

The fourth proportional to 135.74, 187.01 and 111.04 is: 152.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.74 : 187.01 = 111.04 : x
  2. Step 2: Convert to fraction form
    135.74/187.01 = 111.04/x
  3. Step 3: Cross multiply
    135.74x = 187.01 × 111.04
  4. Step 4: Simplify right side
    135.74x = 20,764.98
  5. Step 5: Solve for x
    x = 20,764.98/135.74
  6. Step 6: Final answer
    x = 152.97

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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.