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Finding the Fourth Proportional to 100,295.93, 138,422.57 and 62,067.79

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Solution

The fourth proportional to 100,295.93, 138,422.57 and 62,067.79 is: 85,662.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,295.93 : 138,422.57 = 62,067.79 : x
  2. Step 2: Convert to fraction form
    100,295.93/138,422.57 = 62,067.79/x
  3. Step 3: Cross multiply
    100,295.93x = 138,422.57 × 62,067.79
  4. Step 4: Simplify right side
    100,295.93x = 8,591,582,349.62
  5. Step 5: Solve for x
    x = 8,591,582,349.62/100,295.93
  6. Step 6: Final answer
    x = 85,662.33

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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.