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Finding the Fourth Proportional to 135.52, 187.04 and 110.91

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Solution

The fourth proportional to 135.52, 187.04 and 110.91 is: 153.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.52 : 187.04 = 110.91 : x
  2. Step 2: Convert to fraction form
    135.52/187.04 = 110.91/x
  3. Step 3: Cross multiply
    135.52x = 187.04 × 110.91
  4. Step 4: Simplify right side
    135.52x = 20,744.61
  5. Step 5: Solve for x
    x = 20,744.61/135.52
  6. Step 6: Final answer
    x = 153.07

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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.