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Finding the Fourth Proportional to 168,578.88, 232,643.42 and 100,635.28

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Solution

The fourth proportional to 168,578.88, 232,643.42 and 100,635.28 is: 138,879.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,578.88 : 232,643.42 = 100,635.28 : x
  2. Step 2: Convert to fraction form
    168,578.88/232,643.42 = 100,635.28/x
  3. Step 3: Cross multiply
    168,578.88x = 232,643.42 × 100,635.28
  4. Step 4: Simplify right side
    168,578.88x = 23,412,135,711.86
  5. Step 5: Solve for x
    x = 23,412,135,711.86/168,578.88
  6. Step 6: Final answer
    x = 138,879.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.