Home / 215,129.82-322,735.77-81,998.94

Finding the Fourth Proportional to 215,129.82, 322,735.77 and 81,998.94

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Solution

The fourth proportional to 215,129.82, 322,735.77 and 81,998.94 is: 123,014.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,129.82 : 322,735.77 = 81,998.94 : x
  2. Step 2: Convert to fraction form
    215,129.82/322,735.77 = 81,998.94/x
  3. Step 3: Cross multiply
    215,129.82x = 322,735.77 × 81,998.94
  4. Step 4: Simplify right side
    215,129.82x = 26,463,991,040.08
  5. Step 5: Solve for x
    x = 26,463,991,040.08/215,129.82
  6. Step 6: Final answer
    x = 123,014.05

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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.