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Finding the Fourth Proportional to 141.61, 213.59 and 124.70

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Solution

The fourth proportional to 141.61, 213.59 and 124.70 is: 188.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.61 : 213.59 = 124.70 : x
  2. Step 2: Convert to fraction form
    141.61/213.59 = 124.70/x
  3. Step 3: Cross multiply
    141.61x = 213.59 × 124.70
  4. Step 4: Simplify right side
    141.61x = 26,634.25
  5. Step 5: Solve for x
    x = 26,634.25/141.61
  6. Step 6: Final answer
    x = 188.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.