Home / 123,520.20-185,453.10-76,864.20

Finding the Fourth Proportional to 123,520.20, 185,453.10 and 76,864.20

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Solution

The fourth proportional to 123,520.20, 185,453.10 and 76,864.20 is: 115,403.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,520.20 : 185,453.10 = 76,864.20 : x
  2. Step 2: Convert to fraction form
    123,520.20/185,453.10 = 76,864.20/x
  3. Step 3: Cross multiply
    123,520.20x = 185,453.10 × 76,864.20
  4. Step 4: Simplify right side
    123,520.20x = 14,254,704,169.02
  5. Step 5: Solve for x
    x = 14,254,704,169.02/123,520.20
  6. Step 6: Final answer
    x = 115,403.83

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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.