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Finding the Fourth Proportional to 141.90, 211.53 and 131.37

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Solution

The fourth proportional to 141.90, 211.53 and 131.37 is: 195.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.90 : 211.53 = 131.37 : x
  2. Step 2: Convert to fraction form
    141.90/211.53 = 131.37/x
  3. Step 3: Cross multiply
    141.90x = 211.53 × 131.37
  4. Step 4: Simplify right side
    141.90x = 27,788.70
  5. Step 5: Solve for x
    x = 27,788.70/141.90
  6. Step 6: Final answer
    x = 195.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.