Home / 213,104.49-319,645.04-128,842.04

Finding the Fourth Proportional to 213,104.49, 319,645.04 and 128,842.04

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Solution

The fourth proportional to 213,104.49, 319,645.04 and 128,842.04 is: 193,255.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,104.49 : 319,645.04 = 128,842.04 : x
  2. Step 2: Convert to fraction form
    213,104.49/319,645.04 = 128,842.04/x
  3. Step 3: Cross multiply
    213,104.49x = 319,645.04 × 128,842.04
  4. Step 4: Simplify right side
    213,104.49x = 41,183,716,787.05
  5. Step 5: Solve for x
    x = 41,183,716,787.05/213,104.49
  6. Step 6: Final answer
    x = 193,255.98

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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.