Home / 82,162.20-123,083.40-53,997.30

Finding the Fourth Proportional to 82,162.20, 123,083.40 and 53,997.30

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Solution

The fourth proportional to 82,162.20, 123,083.40 and 53,997.30 is: 80,890.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,162.20 : 123,083.40 = 53,997.30 : x
  2. Step 2: Convert to fraction form
    82,162.20/123,083.40 = 53,997.30/x
  3. Step 3: Cross multiply
    82,162.20x = 123,083.40 × 53,997.30
  4. Step 4: Simplify right side
    82,162.20x = 6,646,171,274.82
  5. Step 5: Solve for x
    x = 6,646,171,274.82/82,162.20
  6. Step 6: Final answer
    x = 80,890.86

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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.