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Finding the Fourth Proportional to 168,759.90, 253,169.01 and 68,974.38

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Solution

The fourth proportional to 168,759.90, 253,169.01 and 68,974.38 is: 103,473.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,759.90 : 253,169.01 = 68,974.38 : x
  2. Step 2: Convert to fraction form
    168,759.90/253,169.01 = 68,974.38/x
  3. Step 3: Cross multiply
    168,759.90x = 253,169.01 × 68,974.38
  4. Step 4: Simplify right side
    168,759.90x = 17,462,175,499.96
  5. Step 5: Solve for x
    x = 17,462,175,499.96/168,759.90
  6. Step 6: Final answer
    x = 103,473.49

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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.