Home / 149,399.20-206,170.94-81,416.20

Finding the Fourth Proportional to 149,399.20, 206,170.94 and 81,416.20

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Solution

The fourth proportional to 149,399.20, 206,170.94 and 81,416.20 is: 112,354.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,399.20 : 206,170.94 = 81,416.20 : x
  2. Step 2: Convert to fraction form
    149,399.20/206,170.94 = 81,416.20/x
  3. Step 3: Cross multiply
    149,399.20x = 206,170.94 × 81,416.20
  4. Step 4: Simplify right side
    149,399.20x = 16,785,653,657.91
  5. Step 5: Solve for x
    x = 16,785,653,657.91/149,399.20
  6. Step 6: Final answer
    x = 112,354.37

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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.