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Finding the Fourth Proportional to 168,907.25, 253,360.86 and 137,279.13

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Solution

The fourth proportional to 168,907.25, 253,360.86 and 137,279.13 is: 205,918.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,907.25 : 253,360.86 = 137,279.13 : x
  2. Step 2: Convert to fraction form
    168,907.25/253,360.86 = 137,279.13/x
  3. Step 3: Cross multiply
    168,907.25x = 253,360.86 × 137,279.13
  4. Step 4: Simplify right side
    168,907.25x = 34,781,158,436.85
  5. Step 5: Solve for x
    x = 34,781,158,436.85/168,907.25
  6. Step 6: Final answer
    x = 205,918.68

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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.