Home / 80,120,439.60-120,180,659.40-74,380,876.80

Finding the Fourth Proportional to 80,120,439.60, 120,180,659.40 and 74,380,876.80

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Solution

The fourth proportional to 80,120,439.60, 120,180,659.40 and 74,380,876.80 is: 111,571,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,120,439.60 : 120,180,659.40 = 74,380,876.80 : x
  2. Step 2: Convert to fraction form
    80,120,439.60/120,180,659.40 = 74,380,876.80/x
  3. Step 3: Cross multiply
    80,120,439.60x = 120,180,659.40 × 74,380,876.80
  4. Step 4: Simplify right side
    80,120,439.60x = 8,939,142,820,574,162
  5. Step 5: Solve for x
    x = 8,939,142,820,574,162/80,120,439.60
  6. Step 6: Final answer
    x = 111,571,315.20

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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.