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Finding the Fourth Proportional to 143,169.11, 214,734.03 and 79,245.48

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Solution

The fourth proportional to 143,169.11, 214,734.03 and 79,245.48 is: 118,857.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,169.11 : 214,734.03 = 79,245.48 : x
  2. Step 2: Convert to fraction form
    143,169.11/214,734.03 = 79,245.48/x
  3. Step 3: Cross multiply
    143,169.11x = 214,734.03 × 79,245.48
  4. Step 4: Simplify right side
    143,169.11x = 17,016,701,279.68
  5. Step 5: Solve for x
    x = 17,016,701,279.68/143,169.11
  6. Step 6: Final answer
    x = 118,857.36

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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.