Home / 138,709.75-191,245.19-113,190.20

Finding the Fourth Proportional to 138,709.75, 191,245.19 and 113,190.20

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Solution

The fourth proportional to 138,709.75, 191,245.19 and 113,190.20 is: 156,060.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,709.75 : 191,245.19 = 113,190.20 : x
  2. Step 2: Convert to fraction form
    138,709.75/191,245.19 = 113,190.20/x
  3. Step 3: Cross multiply
    138,709.75x = 191,245.19 × 113,190.20
  4. Step 4: Simplify right side
    138,709.75x = 21,647,081,305.14
  5. Step 5: Solve for x
    x = 21,647,081,305.14/138,709.75
  6. Step 6: Final answer
    x = 156,060.27

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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.