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Finding the Fourth Proportional to 141.46, 212.18 and 123.43

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Solution

The fourth proportional to 141.46, 212.18 and 123.43 is: 185.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.46 : 212.18 = 123.43 : x
  2. Step 2: Convert to fraction form
    141.46/212.18 = 123.43/x
  3. Step 3: Cross multiply
    141.46x = 212.18 × 123.43
  4. Step 4: Simplify right side
    141.46x = 26,189.38
  5. Step 5: Solve for x
    x = 26,189.38/141.46
  6. Step 6: Final answer
    x = 185.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.