Home / 81,465,861.60-122,198,792.40-76,045,163.40

Finding the Fourth Proportional to 81,465,861.60, 122,198,792.40 and 76,045,163.40

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Solution

The fourth proportional to 81,465,861.60, 122,198,792.40 and 76,045,163.40 is: 114,067,745.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465,861.60 : 122,198,792.40 = 76,045,163.40 : x
  2. Step 2: Convert to fraction form
    81,465,861.60/122,198,792.40 = 76,045,163.40/x
  3. Step 3: Cross multiply
    81,465,861.60x = 122,198,792.40 × 76,045,163.40
  4. Step 4: Simplify right side
    81,465,861.60x = 9,292,627,135,340,680
  5. Step 5: Solve for x
    x = 9,292,627,135,340,680/81,465,861.60
  6. Step 6: Final answer
    x = 114,067,745.10

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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.