Home / 115,338.20-173,007.30-85,813.70

Finding the Fourth Proportional to 115,338.20, 173,007.30 and 85,813.70

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Solution

The fourth proportional to 115,338.20, 173,007.30 and 85,813.70 is: 128,720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,338.20 : 173,007.30 = 85,813.70 : x
  2. Step 2: Convert to fraction form
    115,338.20/173,007.30 = 85,813.70/x
  3. Step 3: Cross multiply
    115,338.20x = 173,007.30 × 85,813.70
  4. Step 4: Simplify right side
    115,338.20x = 14,846,396,540.01
  5. Step 5: Solve for x
    x = 14,846,396,540.01/115,338.20
  6. Step 6: Final answer
    x = 128,720.55

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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.