Home / 231,607.89-319,624.56-129,632.49

Finding the Fourth Proportional to 231,607.89, 319,624.56 and 129,632.49

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Solution

The fourth proportional to 231,607.89, 319,624.56 and 129,632.49 is: 178,896.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,607.89 : 319,624.56 = 129,632.49 : x
  2. Step 2: Convert to fraction form
    231,607.89/319,624.56 = 129,632.49/x
  3. Step 3: Cross multiply
    231,607.89x = 319,624.56 × 129,632.49
  4. Step 4: Simplify right side
    231,607.89x = 41,433,727,577.95
  5. Step 5: Solve for x
    x = 41,433,727,577.95/231,607.89
  6. Step 6: Final answer
    x = 178,896.01

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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.