Home / 231,906.24-320,038.56-135,103.68

Finding the Fourth Proportional to 231,906.24, 320,038.56 and 135,103.68

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Solution

The fourth proportional to 231,906.24, 320,038.56 and 135,103.68 is: 186,447.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,906.24 : 320,038.56 = 135,103.68 : x
  2. Step 2: Convert to fraction form
    231,906.24/320,038.56 = 135,103.68/x
  3. Step 3: Cross multiply
    231,906.24x = 320,038.56 × 135,103.68
  4. Step 4: Simplify right side
    231,906.24x = 43,238,387,197.90
  5. Step 5: Solve for x
    x = 43,238,387,197.90/231,906.24
  6. Step 6: Final answer
    x = 186,447.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.