Home / 201,917.40-278,647.86-111,276.60

Finding the Fourth Proportional to 201,917.40, 278,647.86 and 111,276.60

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Solution

The fourth proportional to 201,917.40, 278,647.86 and 111,276.60 is: 153,562.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,917.40 : 278,647.86 = 111,276.60 : x
  2. Step 2: Convert to fraction form
    201,917.40/278,647.86 = 111,276.60/x
  3. Step 3: Cross multiply
    201,917.40x = 278,647.86 × 111,276.60
  4. Step 4: Simplify right side
    201,917.40x = 31,006,986,458.08
  5. Step 5: Solve for x
    x = 31,006,986,458.08/201,917.40
  6. Step 6: Final answer
    x = 153,562.73

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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.