Home / 129,028.20-193,542.30-84,791.40

Finding the Fourth Proportional to 129,028.20, 193,542.30 and 84,791.40

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Solution

The fourth proportional to 129,028.20, 193,542.30 and 84,791.40 is: 127,187.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,028.20 : 193,542.30 = 84,791.40 : x
  2. Step 2: Convert to fraction form
    129,028.20/193,542.30 = 84,791.40/x
  3. Step 3: Cross multiply
    129,028.20x = 193,542.30 × 84,791.40
  4. Step 4: Simplify right side
    129,028.20x = 16,410,722,576.22
  5. Step 5: Solve for x
    x = 16,410,722,576.22/129,028.20
  6. Step 6: Final answer
    x = 127,187.10

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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.