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Finding the Fourth Proportional to 168,774.66, 253,217.46 and 69,018.78

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Solution

The fourth proportional to 168,774.66, 253,217.46 and 69,018.78 is: 103,550.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,774.66 : 253,217.46 = 69,018.78 : x
  2. Step 2: Convert to fraction form
    168,774.66/253,217.46 = 69,018.78/x
  3. Step 3: Cross multiply
    168,774.66x = 253,217.46 × 69,018.78
  4. Step 4: Simplify right side
    168,774.66x = 17,476,760,163.90
  5. Step 5: Solve for x
    x = 17,476,760,163.90/168,774.66
  6. Step 6: Final answer
    x = 103,550.85

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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.