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Finding the Fourth Proportional to 168,872.10, 253,226.34 and 68,992.62

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Solution

The fourth proportional to 168,872.10, 253,226.34 and 68,992.62 is: 103,455.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,872.10 : 253,226.34 = 68,992.62 : x
  2. Step 2: Convert to fraction form
    168,872.10/253,226.34 = 68,992.62/x
  3. Step 3: Cross multiply
    168,872.10x = 253,226.34 × 68,992.62
  4. Step 4: Simplify right side
    168,872.10x = 17,470,748,649.61
  5. Step 5: Solve for x
    x = 17,470,748,649.61/168,872.10
  6. Step 6: Final answer
    x = 103,455.51

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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.