Home / 231,996.40-320,139.87-136,484.64

Finding the Fourth Proportional to 231,996.40, 320,139.87 and 136,484.64

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Solution

The fourth proportional to 231,996.40, 320,139.87 and 136,484.64 is: 188,339.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,996.40 : 320,139.87 = 136,484.64 : x
  2. Step 2: Convert to fraction form
    231,996.40/320,139.87 = 136,484.64/x
  3. Step 3: Cross multiply
    231,996.40x = 320,139.87 × 136,484.64
  4. Step 4: Simplify right side
    231,996.40x = 43,694,174,906.60
  5. Step 5: Solve for x
    x = 43,694,174,906.60/231,996.40
  6. Step 6: Final answer
    x = 188,339.88

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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.