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Finding the Fourth Proportional to 168,687.90, 232,750.94 and 100,726.88

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Solution

The fourth proportional to 168,687.90, 232,750.94 and 100,726.88 is: 138,980.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,687.90 : 232,750.94 = 100,726.88 : x
  2. Step 2: Convert to fraction form
    168,687.90/232,750.94 = 100,726.88/x
  3. Step 3: Cross multiply
    168,687.90x = 232,750.94 × 100,726.88
  4. Step 4: Simplify right side
    168,687.90x = 23,444,274,335.88
  5. Step 5: Solve for x
    x = 23,444,274,335.88/168,687.90
  6. Step 6: Final answer
    x = 138,980.18

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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.