Home / 80,168,092.20-120,252,138.30-68,688,966.60

Finding the Fourth Proportional to 80,168,092.20, 120,252,138.30 and 68,688,966.60

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Solution

The fourth proportional to 80,168,092.20, 120,252,138.30 and 68,688,966.60 is: 103,033,449.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,168,092.20 : 120,252,138.30 = 68,688,966.60 : x
  2. Step 2: Convert to fraction form
    80,168,092.20/120,252,138.30 = 68,688,966.60/x
  3. Step 3: Cross multiply
    80,168,092.20x = 120,252,138.30 × 68,688,966.60
  4. Step 4: Simplify right side
    80,168,092.20x = 8,259,995,111,267,280
  5. Step 5: Solve for x
    x = 8,259,995,111,267,280/80,168,092.20
  6. Step 6: Final answer
    x = 103,033,449.90

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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.