Home / 123,558.21-185,338.30-80,899.60

Finding the Fourth Proportional to 123,558.21, 185,338.30 and 80,899.60

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Solution

The fourth proportional to 123,558.21, 185,338.30 and 80,899.60 is: 121,350.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,558.21 : 185,338.30 = 80,899.60 : x
  2. Step 2: Convert to fraction form
    123,558.21/185,338.30 = 80,899.60/x
  3. Step 3: Cross multiply
    123,558.21x = 185,338.30 × 80,899.60
  4. Step 4: Simplify right side
    123,558.21x = 14,993,794,135.18
  5. Step 5: Solve for x
    x = 14,993,794,135.18/123,558.21
  6. Step 6: Final answer
    x = 121,350.04

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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.