Home / 149,899.03-206,863.38-81,918.88

Finding the Fourth Proportional to 149,899.03, 206,863.38 and 81,918.88

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Solution

The fourth proportional to 149,899.03, 206,863.38 and 81,918.88 is: 113,049.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,899.03 : 206,863.38 = 81,918.88 : x
  2. Step 2: Convert to fraction form
    149,899.03/206,863.38 = 81,918.88/x
  3. Step 3: Cross multiply
    149,899.03x = 206,863.38 × 81,918.88
  4. Step 4: Simplify right side
    149,899.03x = 16,946,015,885.46
  5. Step 5: Solve for x
    x = 16,946,015,885.46/149,899.03
  6. Step 6: Final answer
    x = 113,049.54

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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.