Home / 80,168,489.70-120,252,734.55-68,689,364.10

Finding the Fourth Proportional to 80,168,489.70, 120,252,734.55 and 68,689,364.10

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Solution

The fourth proportional to 80,168,489.70, 120,252,734.55 and 68,689,364.10 is: 103,034,046.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,168,489.70 : 120,252,734.55 = 68,689,364.10 : x
  2. Step 2: Convert to fraction form
    80,168,489.70/120,252,734.55 = 68,689,364.10/x
  3. Step 3: Cross multiply
    80,168,489.70x = 120,252,734.55 × 68,689,364.10
  4. Step 4: Simplify right side
    80,168,489.70x = 8,260,083,867,525,599
  5. Step 5: Solve for x
    x = 8,260,083,867,525,599/80,168,489.70
  6. Step 6: Final answer
    x = 103,034,046.15

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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.