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Finding the Fourth Proportional to 168,768.90, 253,153.35 and 68,895.90

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Solution

The fourth proportional to 168,768.90, 253,153.35 and 68,895.90 is: 103,343.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,768.90 : 253,153.35 = 68,895.90 : x
  2. Step 2: Convert to fraction form
    168,768.90/253,153.35 = 68,895.90/x
  3. Step 3: Cross multiply
    168,768.90x = 253,153.35 × 68,895.90
  4. Step 4: Simplify right side
    168,768.90x = 17,441,227,886.27
  5. Step 5: Solve for x
    x = 17,441,227,886.27/168,768.90
  6. Step 6: Final answer
    x = 103,343.85

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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.