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Finding the Fourth Proportional to 141,231.40, 211,847.10 and 71,247.40

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Solution

The fourth proportional to 141,231.40, 211,847.10 and 71,247.40 is: 106,871.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,231.40 : 211,847.10 = 71,247.40 : x
  2. Step 2: Convert to fraction form
    141,231.40/211,847.10 = 71,247.40/x
  3. Step 3: Cross multiply
    141,231.40x = 211,847.10 × 71,247.40
  4. Step 4: Simplify right side
    141,231.40x = 15,093,555,072.54
  5. Step 5: Solve for x
    x = 15,093,555,072.54/141,231.40
  6. Step 6: Final answer
    x = 106,871.10

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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.