Home / 100,067.94-138,103.38-59,781.24

Finding the Fourth Proportional to 100,067.94, 138,103.38 and 59,781.24

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Solution

The fourth proportional to 100,067.94, 138,103.38 and 59,781.24 is: 82,503.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,067.94 : 138,103.38 = 59,781.24 : x
  2. Step 2: Convert to fraction form
    100,067.94/138,103.38 = 59,781.24/x
  3. Step 3: Cross multiply
    100,067.94x = 138,103.38 × 59,781.24
  4. Step 4: Simplify right side
    100,067.94x = 8,255,991,304.59
  5. Step 5: Solve for x
    x = 8,255,991,304.59/100,067.94
  6. Step 6: Final answer
    x = 82,503.86

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1.5x scale

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.