Home / 231,641.40-319,670.55-129,664.33

Finding the Fourth Proportional to 231,641.40, 319,670.55 and 129,664.33

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Solution

The fourth proportional to 231,641.40, 319,670.55 and 129,664.33 is: 178,939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,641.40 : 319,670.55 = 129,664.33 : x
  2. Step 2: Convert to fraction form
    231,641.40/319,670.55 = 129,664.33/x
  3. Step 3: Cross multiply
    231,641.40x = 319,670.55 × 129,664.33
  4. Step 4: Simplify right side
    231,641.40x = 41,449,866,887.31
  5. Step 5: Solve for x
    x = 41,449,866,887.31/231,641.40
  6. Step 6: Final answer
    x = 178,939.80

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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.