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Finding the Fourth Proportional to 135.85, 187.37 and 99.04

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Solution

The fourth proportional to 135.85, 187.37 and 99.04 is: 136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.85 : 187.37 = 99.04 : x
  2. Step 2: Convert to fraction form
    135.85/187.37 = 99.04/x
  3. Step 3: Cross multiply
    135.85x = 187.37 × 99.04
  4. Step 4: Simplify right side
    135.85x = 18,557.12
  5. Step 5: Solve for x
    x = 18,557.12/135.85
  6. Step 6: Final answer
    x = 136.60

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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.