Home / 131,091.15-196,286.81-115,344.75

Finding the Fourth Proportional to 131,091.15, 196,286.81 and 115,344.75

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Solution

The fourth proportional to 131,091.15, 196,286.81 and 115,344.75 is: 172,709.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,091.15 : 196,286.81 = 115,344.75 : x
  2. Step 2: Convert to fraction form
    131,091.15/196,286.81 = 115,344.75/x
  3. Step 3: Cross multiply
    131,091.15x = 196,286.81 × 115,344.75
  4. Step 4: Simplify right side
    131,091.15x = 22,640,652,451.02
  5. Step 5: Solve for x
    x = 22,640,652,451.02/131,091.15
  6. Step 6: Final answer
    x = 172,709.24

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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.