Home / 185,512.20-278,421.90-85,825.80

Finding the Fourth Proportional to 185,512.20, 278,421.90 and 85,825.80

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Solution

The fourth proportional to 185,512.20, 278,421.90 and 85,825.80 is: 128,809.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,512.20 : 278,421.90 = 85,825.80 : x
  2. Step 2: Convert to fraction form
    185,512.20/278,421.90 = 85,825.80/x
  3. Step 3: Cross multiply
    185,512.20x = 278,421.90 × 85,825.80
  4. Step 4: Simplify right side
    185,512.20x = 23,895,782,305.02
  5. Step 5: Solve for x
    x = 23,895,782,305.02/185,512.20
  6. Step 6: Final answer
    x = 128,809.76

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1.5x scale

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.