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Finding the Fourth Proportional to 141.77, 195.68 and 135.09

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Solution

The fourth proportional to 141.77, 195.68 and 135.09 is: 186.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.77 : 195.68 = 135.09 : x
  2. Step 2: Convert to fraction form
    141.77/195.68 = 135.09/x
  3. Step 3: Cross multiply
    141.77x = 195.68 × 135.09
  4. Step 4: Simplify right side
    141.77x = 26,434.75
  5. Step 5: Solve for x
    x = 26,434.75/141.77
  6. Step 6: Final answer
    x = 186.46

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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.