Home / 80,588,728.40-120,883,092.60-68,117,579.60

Finding the Fourth Proportional to 80,588,728.40, 120,883,092.60 and 68,117,579.60

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Solution

The fourth proportional to 80,588,728.40, 120,883,092.60 and 68,117,579.60 is: 102,176,369.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,588,728.40 : 120,883,092.60 = 68,117,579.60 : x
  2. Step 2: Convert to fraction form
    80,588,728.40/120,883,092.60 = 68,117,579.60/x
  3. Step 3: Cross multiply
    80,588,728.40x = 120,883,092.60 × 68,117,579.60
  4. Step 4: Simplify right side
    80,588,728.40x = 8,234,263,682,474,670
  5. Step 5: Solve for x
    x = 8,234,263,682,474,670/80,588,728.40
  6. Step 6: Final answer
    x = 102,176,369.40

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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.