Home / 149,418.05-206,190.83-81,433.58

Finding the Fourth Proportional to 149,418.05, 206,190.83 and 81,433.58

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Solution

The fourth proportional to 149,418.05, 206,190.83 and 81,433.58 is: 112,375.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,418.05 : 206,190.83 = 81,433.58 : x
  2. Step 2: Convert to fraction form
    149,418.05/206,190.83 = 81,433.58/x
  3. Step 3: Cross multiply
    149,418.05x = 206,190.83 × 81,433.58
  4. Step 4: Simplify right side
    149,418.05x = 16,790,856,622.70
  5. Step 5: Solve for x
    x = 16,790,856,622.70/149,418.05
  6. Step 6: Final answer
    x = 112,375.03

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1.5x scale

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.