Home / 100,621,081.54-138,856,257.21-56,568,276.30

Finding the Fourth Proportional to 100,621,081.54, 138,856,257.21 and 56,568,276.30

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Solution

The fourth proportional to 100,621,081.54, 138,856,257.21 and 56,568,276.30 is: 78,063,751.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,621,081.54 : 138,856,257.21 = 56,568,276.30 : x
  2. Step 2: Convert to fraction form
    100,621,081.54/138,856,257.21 = 56,568,276.30/x
  3. Step 3: Cross multiply
    100,621,081.54x = 138,856,257.21 × 56,568,276.30
  4. Step 4: Simplify right side
    100,621,081.54x = 7,854,859,123,790,923
  5. Step 5: Solve for x
    x = 7,854,859,123,790,923/100,621,081.54
  6. Step 6: Final answer
    x = 78,063,751.69

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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.