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Finding the Fourth Proportional to 168,040.86, 231,791.87 and 100,011.39

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Solution

The fourth proportional to 168,040.86, 231,791.87 and 100,011.39 is: 137,953.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,040.86 : 231,791.87 = 100,011.39 : x
  2. Step 2: Convert to fraction form
    168,040.86/231,791.87 = 100,011.39/x
  3. Step 3: Cross multiply
    168,040.86x = 231,791.87 × 100,011.39
  4. Step 4: Simplify right side
    168,040.86x = 23,181,827,359.43
  5. Step 5: Solve for x
    x = 23,181,827,359.43/168,040.86
  6. Step 6: Final answer
    x = 137,953.52

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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.