Home / 231,731.37-319,790.12-129,761.28

Finding the Fourth Proportional to 231,731.37, 319,790.12 and 129,761.28

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Solution

The fourth proportional to 231,731.37, 319,790.12 and 129,761.28 is: 179,071.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,731.37 : 319,790.12 = 129,761.28 : x
  2. Step 2: Convert to fraction form
    231,731.37/319,790.12 = 129,761.28/x
  3. Step 3: Cross multiply
    231,731.37x = 319,790.12 × 129,761.28
  4. Step 4: Simplify right side
    231,731.37x = 41,496,374,653.75
  5. Step 5: Solve for x
    x = 41,496,374,653.75/231,731.37
  6. Step 6: Final answer
    x = 179,071.03

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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.