Home / 185,640.35-278,415.92-85,704.56

Finding the Fourth Proportional to 185,640.35, 278,415.92 and 85,704.56

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Solution

The fourth proportional to 185,640.35, 278,415.92 and 85,704.56 is: 128,536.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,640.35 : 278,415.92 = 85,704.56 : x
  2. Step 2: Convert to fraction form
    185,640.35/278,415.92 = 85,704.56/x
  3. Step 3: Cross multiply
    185,640.35x = 278,415.92 × 85,704.56
  4. Step 4: Simplify right side
    185,640.35x = 23,861,512,099.99
  5. Step 5: Solve for x
    x = 23,861,512,099.99/185,640.35
  6. Step 6: Final answer
    x = 128,536.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.