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Finding the Fourth Proportional to 163,843.38, 245,860.61 and 69,067.78

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Solution

The fourth proportional to 163,843.38, 245,860.61 and 69,067.78 is: 103,641.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,843.38 : 245,860.61 = 69,067.78 : x
  2. Step 2: Convert to fraction form
    163,843.38/245,860.61 = 69,067.78/x
  3. Step 3: Cross multiply
    163,843.38x = 245,860.61 × 69,067.78
  4. Step 4: Simplify right side
    163,843.38x = 16,981,045,562.16
  5. Step 5: Solve for x
    x = 16,981,045,562.16/163,843.38
  6. Step 6: Final answer
    x = 103,641.94

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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.