Home / 201,761.45-278,427.40-111,125.85

Finding the Fourth Proportional to 201,761.45, 278,427.40 and 111,125.85

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Solution

The fourth proportional to 201,761.45, 278,427.40 and 111,125.85 is: 153,351.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,761.45 : 278,427.40 = 111,125.85 : x
  2. Step 2: Convert to fraction form
    201,761.45/278,427.40 = 111,125.85/x
  3. Step 3: Cross multiply
    201,761.45x = 278,427.40 × 111,125.85
  4. Step 4: Simplify right side
    201,761.45x = 30,940,481,210.48
  5. Step 5: Solve for x
    x = 30,940,481,210.48/201,761.45
  6. Step 6: Final answer
    x = 153,351.80

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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.