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Finding the Fourth Proportional to 168,879.51, 253,319.06 and 80,084.57

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Solution

The fourth proportional to 168,879.51, 253,319.06 and 80,084.57 is: 120,126.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,879.51 : 253,319.06 = 80,084.57 : x
  2. Step 2: Convert to fraction form
    168,879.51/253,319.06 = 80,084.57/x
  3. Step 3: Cross multiply
    168,879.51x = 253,319.06 × 80,084.57
  4. Step 4: Simplify right side
    168,879.51x = 20,286,947,992.90
  5. Step 5: Solve for x
    x = 20,286,947,992.90/168,879.51
  6. Step 6: Final answer
    x = 120,126.76

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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.