Home / 231,979.86-320,122.53-131,377.86

Finding the Fourth Proportional to 231,979.86, 320,122.53 and 131,377.86

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Solution

The fourth proportional to 231,979.86, 320,122.53 and 131,377.86 is: 181,295.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,979.86 : 320,122.53 = 131,377.86 : x
  2. Step 2: Convert to fraction form
    231,979.86/320,122.53 = 131,377.86/x
  3. Step 3: Cross multiply
    231,979.86x = 320,122.53 × 131,377.86
  4. Step 4: Simplify right side
    231,979.86x = 42,057,012,929.19
  5. Step 5: Solve for x
    x = 42,057,012,929.19/231,979.86
  6. Step 6: Final answer
    x = 181,295.97

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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.