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Finding the Fourth Proportional to 141.47, 212.39 and 118.92

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Solution

The fourth proportional to 141.47, 212.39 and 118.92 is: 178.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.47 : 212.39 = 118.92 : x
  2. Step 2: Convert to fraction form
    141.47/212.39 = 118.92/x
  3. Step 3: Cross multiply
    141.47x = 212.39 × 118.92
  4. Step 4: Simplify right side
    141.47x = 25,256.82
  5. Step 5: Solve for x
    x = 25,256.82/141.47
  6. Step 6: Final answer
    x = 178.54

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