Home / 213,022,892.80-319,534,339.20-91,854,344.80

Finding the Fourth Proportional to 213,022,892.80, 319,534,339.20 and 91,854,344.80

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Solution

The fourth proportional to 213,022,892.80, 319,534,339.20 and 91,854,344.80 is: 137,781,517.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,022,892.80 : 319,534,339.20 = 91,854,344.80 : x
  2. Step 2: Convert to fraction form
    213,022,892.80/319,534,339.20 = 91,854,344.80/x
  3. Step 3: Cross multiply
    213,022,892.80x = 319,534,339.20 × 91,854,344.80
  4. Step 4: Simplify right side
    213,022,892.80x = 29,350,617,368,316,956
  5. Step 5: Solve for x
    x = 29,350,617,368,316,956/213,022,892.80
  6. Step 6: Final answer
    x = 137,781,517.20

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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.