Home / 111,917.39-154,103.97-84,362.09

Finding the Fourth Proportional to 111,917.39, 154,103.97 and 84,362.09

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Solution

The fourth proportional to 111,917.39, 154,103.97 and 84,362.09 is: 116,161.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,917.39 : 154,103.97 = 84,362.09 : x
  2. Step 2: Convert to fraction form
    111,917.39/154,103.97 = 84,362.09/x
  3. Step 3: Cross multiply
    111,917.39x = 154,103.97 × 84,362.09
  4. Step 4: Simplify right side
    111,917.39x = 13,000,532,215.98
  5. Step 5: Solve for x
    x = 13,000,532,215.98/111,917.39
  6. Step 6: Final answer
    x = 116,161.87

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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.