Home / 149,836.58-206,765.34-81,839.78

Finding the Fourth Proportional to 149,836.58, 206,765.34 and 81,839.78

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Solution

The fourth proportional to 149,836.58, 206,765.34 and 81,839.78 is: 112,933.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,836.58 : 206,765.34 = 81,839.78 : x
  2. Step 2: Convert to fraction form
    149,836.58/206,765.34 = 81,839.78/x
  3. Step 3: Cross multiply
    149,836.58x = 206,765.34 × 81,839.78
  4. Step 4: Simplify right side
    149,836.58x = 16,921,629,937.23
  5. Step 5: Solve for x
    x = 16,921,629,937.23/149,836.58
  6. Step 6: Final answer
    x = 112,933.90

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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.