Home / 100,067.10-138,074.42-57,044.76

Finding the Fourth Proportional to 100,067.10, 138,074.42 and 57,044.76

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Solution

The fourth proportional to 100,067.10, 138,074.42 and 57,044.76 is: 78,711.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,067.10 : 138,074.42 = 57,044.76 : x
  2. Step 2: Convert to fraction form
    100,067.10/138,074.42 = 57,044.76/x
  3. Step 3: Cross multiply
    100,067.10x = 138,074.42 × 57,044.76
  4. Step 4: Simplify right side
    100,067.10x = 7,876,422,151.04
  5. Step 5: Solve for x
    x = 7,876,422,151.04/100,067.10
  6. Step 6: Final answer
    x = 78,711.41

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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.