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Finding the Fourth Proportional to 141.87, 212.60 and 109.25

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Solution

The fourth proportional to 141.87, 212.60 and 109.25 is: 163.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.87 : 212.60 = 109.25 : x
  2. Step 2: Convert to fraction form
    141.87/212.60 = 109.25/x
  3. Step 3: Cross multiply
    141.87x = 212.60 × 109.25
  4. Step 4: Simplify right side
    141.87x = 23,226.55
  5. Step 5: Solve for x
    x = 23,226.55/141.87
  6. Step 6: Final answer
    x = 163.72

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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.