Home / 149,383.99-206,147.25-81,401.44

Finding the Fourth Proportional to 149,383.99, 206,147.25 and 81,401.44

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Solution

The fourth proportional to 149,383.99, 206,147.25 and 81,401.44 is: 112,332.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,383.99 : 206,147.25 = 81,401.44 : x
  2. Step 2: Convert to fraction form
    149,383.99/206,147.25 = 81,401.44/x
  3. Step 3: Cross multiply
    149,383.99x = 206,147.25 × 81,401.44
  4. Step 4: Simplify right side
    149,383.99x = 16,780,683,002.04
  5. Step 5: Solve for x
    x = 16,780,683,002.04/149,383.99
  6. Step 6: Final answer
    x = 112,332.54

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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.