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Finding the Fourth Proportional to 168,672.35, 253,008.56 and 68,879.54

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Solution

The fourth proportional to 168,672.35, 253,008.56 and 68,879.54 is: 103,319.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,672.35 : 253,008.56 = 68,879.54 : x
  2. Step 2: Convert to fraction form
    168,672.35/253,008.56 = 68,879.54/x
  3. Step 3: Cross multiply
    168,672.35x = 253,008.56 × 68,879.54
  4. Step 4: Simplify right side
    168,672.35x = 17,427,113,228.86
  5. Step 5: Solve for x
    x = 17,427,113,228.86/168,672.35
  6. Step 6: Final answer
    x = 103,319.32

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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.