Home / 107,455.20-161,182.80-82,620.60

Finding the Fourth Proportional to 107,455.20, 161,182.80 and 82,620.60

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Solution

The fourth proportional to 107,455.20, 161,182.80 and 82,620.60 is: 123,930.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,455.20 : 161,182.80 = 82,620.60 : x
  2. Step 2: Convert to fraction form
    107,455.20/161,182.80 = 82,620.60/x
  3. Step 3: Cross multiply
    107,455.20x = 161,182.80 × 82,620.60
  4. Step 4: Simplify right side
    107,455.20x = 13,317,019,645.68
  5. Step 5: Solve for x
    x = 13,317,019,645.68/107,455.20
  6. Step 6: Final answer
    x = 123,930.90

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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.