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Finding the Fourth Proportional to 141.60, 195.18 and 135.72

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Solution

The fourth proportional to 141.60, 195.18 and 135.72 is: 187.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.60 : 195.18 = 135.72 : x
  2. Step 2: Convert to fraction form
    141.60/195.18 = 135.72/x
  3. Step 3: Cross multiply
    141.60x = 195.18 × 135.72
  4. Step 4: Simplify right side
    141.60x = 26,489.83
  5. Step 5: Solve for x
    x = 26,489.83/141.60
  6. Step 6: Final answer
    x = 187.08

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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.