Home / 201,917.22-278,658.09-111,273.18

Finding the Fourth Proportional to 201,917.22, 278,658.09 and 111,273.18

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Solution

The fourth proportional to 201,917.22, 278,658.09 and 111,273.18 is: 153,563.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,917.22 : 278,658.09 = 111,273.18 : x
  2. Step 2: Convert to fraction form
    201,917.22/278,658.09 = 111,273.18/x
  3. Step 3: Cross multiply
    201,917.22x = 278,658.09 × 111,273.18
  4. Step 4: Simplify right side
    201,917.22x = 31,007,171,807.03
  5. Step 5: Solve for x
    x = 31,007,171,807.03/201,917.22
  6. Step 6: Final answer
    x = 153,563.78

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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.