Home / 149,899.22-206,863.64-81,919.07

Finding the Fourth Proportional to 149,899.22, 206,863.64 and 81,919.07

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Solution

The fourth proportional to 149,899.22, 206,863.64 and 81,919.07 is: 113,049.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,899.22 : 206,863.64 = 81,919.07 : x
  2. Step 2: Convert to fraction form
    149,899.22/206,863.64 = 81,919.07/x
  3. Step 3: Cross multiply
    149,899.22x = 206,863.64 × 81,919.07
  4. Step 4: Simplify right side
    149,899.22x = 16,946,075,561.70
  5. Step 5: Solve for x
    x = 16,946,075,561.70/149,899.22
  6. Step 6: Final answer
    x = 113,049.80

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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.