Home / 80,168,458.20-120,252,687.30-68,689,332.60

Finding the Fourth Proportional to 80,168,458.20, 120,252,687.30 and 68,689,332.60

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Solution

The fourth proportional to 80,168,458.20, 120,252,687.30 and 68,689,332.60 is: 103,033,998.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,168,458.20 : 120,252,687.30 = 68,689,332.60 : x
  2. Step 2: Convert to fraction form
    80,168,458.20/120,252,687.30 = 68,689,332.60/x
  3. Step 3: Cross multiply
    80,168,458.20x = 120,252,687.30 × 68,689,332.60
  4. Step 4: Simplify right side
    80,168,458.20x = 8,260,076,833,993,495
  5. Step 5: Solve for x
    x = 8,260,076,833,993,495/80,168,458.20
  6. Step 6: Final answer
    x = 103,033,998.90

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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.