Home / 209,983.46-289,822.41-123,910.43

Finding the Fourth Proportional to 209,983.46, 289,822.41 and 123,910.43

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Solution

The fourth proportional to 209,983.46, 289,822.41 and 123,910.43 is: 171,023.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,983.46 : 289,822.41 = 123,910.43 : x
  2. Step 2: Convert to fraction form
    209,983.46/289,822.41 = 123,910.43/x
  3. Step 3: Cross multiply
    209,983.46x = 289,822.41 × 123,910.43
  4. Step 4: Simplify right side
    209,983.46x = 35,912,017,997.62
  5. Step 5: Solve for x
    x = 35,912,017,997.62/209,983.46
  6. Step 6: Final answer
    x = 171,023.08

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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.