Home / 100,339.05-138,469.23-55,016.92

Finding the Fourth Proportional to 100,339.05, 138,469.23 and 55,016.92

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Solution

The fourth proportional to 100,339.05, 138,469.23 and 55,016.92 is: 75,924.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,339.05 : 138,469.23 = 55,016.92 : x
  2. Step 2: Convert to fraction form
    100,339.05/138,469.23 = 55,016.92/x
  3. Step 3: Cross multiply
    100,339.05x = 138,469.23 × 55,016.92
  4. Step 4: Simplify right side
    100,339.05x = 7,618,149,581.94
  5. Step 5: Solve for x
    x = 7,618,149,581.94/100,339.05
  6. Step 6: Final answer
    x = 75,924.08

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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.