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Finding the Fourth Proportional to 141.30, 212.23 and 123.07

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Solution

The fourth proportional to 141.30, 212.23 and 123.07 is: 184.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.30 : 212.23 = 123.07 : x
  2. Step 2: Convert to fraction form
    141.30/212.23 = 123.07/x
  3. Step 3: Cross multiply
    141.30x = 212.23 × 123.07
  4. Step 4: Simplify right side
    141.30x = 26,119.15
  5. Step 5: Solve for x
    x = 26,119.15/141.30
  6. Step 6: Final answer
    x = 184.85

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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.