Home / 80,120,512.20-120,180,768.30-28,984,078.20

Finding the Fourth Proportional to 80,120,512.20, 120,180,768.30 and 28,984,078.20

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Solution

The fourth proportional to 80,120,512.20, 120,180,768.30 and 28,984,078.20 is: 43,476,117.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,120,512.20 : 120,180,768.30 = 28,984,078.20 : x
  2. Step 2: Convert to fraction form
    80,120,512.20/120,180,768.30 = 28,984,078.20/x
  3. Step 3: Cross multiply
    80,120,512.20x = 120,180,768.30 × 28,984,078.20
  4. Step 4: Simplify right side
    80,120,512.20x = 3,483,328,786,543,281
  5. Step 5: Solve for x
    x = 3,483,328,786,543,281/80,120,512.20
  6. Step 6: Final answer
    x = 43,476,117.30

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1.5x scale

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.