Home / 185,570.08-278,139.96-85,520.09

Finding the Fourth Proportional to 185,570.08, 278,139.96 and 85,520.09

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Solution

The fourth proportional to 185,570.08, 278,139.96 and 85,520.09 is: 128,180.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,570.08 : 278,139.96 = 85,520.09 : x
  2. Step 2: Convert to fraction form
    185,570.08/278,139.96 = 85,520.09/x
  3. Step 3: Cross multiply
    185,570.08x = 278,139.96 × 85,520.09
  4. Step 4: Simplify right side
    185,570.08x = 23,786,555,107.15
  5. Step 5: Solve for x
    x = 23,786,555,107.15/185,570.08
  6. Step 6: Final answer
    x = 128,180.98

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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.