Home / 149,614.12-206,439.16-89,190.45

Finding the Fourth Proportional to 149,614.12, 206,439.16 and 89,190.45

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Solution

The fourth proportional to 149,614.12, 206,439.16 and 89,190.45 is: 123,065.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,614.12 : 206,439.16 = 89,190.45 : x
  2. Step 2: Convert to fraction form
    149,614.12/206,439.16 = 89,190.45/x
  3. Step 3: Cross multiply
    149,614.12x = 206,439.16 × 89,190.45
  4. Step 4: Simplify right side
    149,614.12x = 18,412,401,578.02
  5. Step 5: Solve for x
    x = 18,412,401,578.02/149,614.12
  6. Step 6: Final answer
    x = 123,065.94

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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.