Home / 213,076.52-319,531.68-79,884.20

Finding the Fourth Proportional to 213,076.52, 319,531.68 and 79,884.20

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Solution

The fourth proportional to 213,076.52, 319,531.68 and 79,884.20 is: 119,795.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,076.52 : 319,531.68 = 79,884.20 : x
  2. Step 2: Convert to fraction form
    213,076.52/319,531.68 = 79,884.20/x
  3. Step 3: Cross multiply
    213,076.52x = 319,531.68 × 79,884.20
  4. Step 4: Simplify right side
    213,076.52x = 25,525,532,631.46
  5. Step 5: Solve for x
    x = 25,525,532,631.46/213,076.52
  6. Step 6: Final answer
    x = 119,795.15

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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.