Home / 133,078.85-199,618.28-85,839.65

Finding the Fourth Proportional to 133,078.85, 199,618.28 and 85,839.65

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Solution

The fourth proportional to 133,078.85, 199,618.28 and 85,839.65 is: 128,759.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,078.85 : 199,618.28 = 85,839.65 : x
  2. Step 2: Convert to fraction form
    133,078.85/199,618.28 = 85,839.65/x
  3. Step 3: Cross multiply
    133,078.85x = 199,618.28 × 85,839.65
  4. Step 4: Simplify right side
    133,078.85x = 17,135,163,288.80
  5. Step 5: Solve for x
    x = 17,135,163,288.80/133,078.85
  6. Step 6: Final answer
    x = 128,759.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.