Home / 82,115.60-123,091.38-70,825.21

Finding the Fourth Proportional to 82,115.60, 123,091.38 and 70,825.21

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Solution

The fourth proportional to 82,115.60, 123,091.38 and 70,825.21 is: 106,167.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,115.60 : 123,091.38 = 70,825.21 : x
  2. Step 2: Convert to fraction form
    82,115.60/123,091.38 = 70,825.21/x
  3. Step 3: Cross multiply
    82,115.60x = 123,091.38 × 70,825.21
  4. Step 4: Simplify right side
    82,115.60x = 8,717,972,529.96
  5. Step 5: Solve for x
    x = 8,717,972,529.96/82,115.60
  6. Step 6: Final answer
    x = 106,167.07

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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.