Home / 213,141.27-319,711.92-107,990.31

Finding the Fourth Proportional to 213,141.27, 319,711.92 and 107,990.31

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Solution

The fourth proportional to 213,141.27, 319,711.92 and 107,990.31 is: 161,985.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,141.27 : 319,711.92 = 107,990.31 : x
  2. Step 2: Convert to fraction form
    213,141.27/319,711.92 = 107,990.31/x
  3. Step 3: Cross multiply
    213,141.27x = 319,711.92 × 107,990.31
  4. Step 4: Simplify right side
    213,141.27x = 34,525,789,351.50
  5. Step 5: Solve for x
    x = 34,525,789,351.50/213,141.27
  6. Step 6: Final answer
    x = 161,985.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.