Home / 81,867,101.40-122,800,652.10-75,170,944.80

Finding the Fourth Proportional to 81,867,101.40, 122,800,652.10 and 75,170,944.80

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Solution

The fourth proportional to 81,867,101.40, 122,800,652.10 and 75,170,944.80 is: 112,756,417.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,867,101.40 : 122,800,652.10 = 75,170,944.80 : x
  2. Step 2: Convert to fraction form
    81,867,101.40/122,800,652.10 = 75,170,944.80/x
  3. Step 3: Cross multiply
    81,867,101.40x = 122,800,652.10 × 75,170,944.80
  4. Step 4: Simplify right side
    81,867,101.40x = 9,231,041,040,413,104
  5. Step 5: Solve for x
    x = 9,231,041,040,413,104/81,867,101.40
  6. Step 6: Final answer
    x = 112,756,417.20

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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.