Home / 149,780.20-206,698.32-81,799.17

Finding the Fourth Proportional to 149,780.20, 206,698.32 and 81,799.17

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Solution

The fourth proportional to 149,780.20, 206,698.32 and 81,799.17 is: 112,883.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,780.20 : 206,698.32 = 81,799.17 : x
  2. Step 2: Convert to fraction form
    149,780.20/206,698.32 = 81,799.17/x
  3. Step 3: Cross multiply
    149,780.20x = 206,698.32 × 81,799.17
  4. Step 4: Simplify right side
    149,780.20x = 16,907,750,811.90
  5. Step 5: Solve for x
    x = 16,907,750,811.90/149,780.20
  6. Step 6: Final answer
    x = 112,883.75

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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.