Home / 149,716.08-206,604.90-81,730.44

Finding the Fourth Proportional to 149,716.08, 206,604.90 and 81,730.44

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Solution

The fourth proportional to 149,716.08, 206,604.90 and 81,730.44 is: 112,786.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,716.08 : 206,604.90 = 81,730.44 : x
  2. Step 2: Convert to fraction form
    149,716.08/206,604.90 = 81,730.44/x
  3. Step 3: Cross multiply
    149,716.08x = 206,604.90 × 81,730.44
  4. Step 4: Simplify right side
    149,716.08x = 16,885,909,383.16
  5. Step 5: Solve for x
    x = 16,885,909,383.16/149,716.08
  6. Step 6: Final answer
    x = 112,786.21

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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.