Home / 149,890.50-206,846.40-81,906.02

Finding the Fourth Proportional to 149,890.50, 206,846.40 and 81,906.02

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Solution

The fourth proportional to 149,890.50, 206,846.40 and 81,906.02 is: 113,028.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,890.50 : 206,846.40 = 81,906.02 : x
  2. Step 2: Convert to fraction form
    149,890.50/206,846.40 = 81,906.02/x
  3. Step 3: Cross multiply
    149,890.50x = 206,846.40 × 81,906.02
  4. Step 4: Simplify right side
    149,890.50x = 16,941,965,375.33
  5. Step 5: Solve for x
    x = 16,941,965,375.33/149,890.50
  6. Step 6: Final answer
    x = 113,028.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.