Home / 213,084.47-319,543.18-79,892.12

Finding the Fourth Proportional to 213,084.47, 319,543.18 and 79,892.12

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Solution

The fourth proportional to 213,084.47, 319,543.18 and 79,892.12 is: 119,806.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,084.47 : 319,543.18 = 79,892.12 : x
  2. Step 2: Convert to fraction form
    213,084.47/319,543.18 = 79,892.12/x
  3. Step 3: Cross multiply
    213,084.47x = 319,543.18 × 79,892.12
  4. Step 4: Simplify right side
    213,084.47x = 25,528,982,680.87
  5. Step 5: Solve for x
    x = 25,528,982,680.87/213,084.47
  6. Step 6: Final answer
    x = 119,806.87

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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.