Home / 212,933,862.30-319,400,793.45-91,765,314.30

Finding the Fourth Proportional to 212,933,862.30, 319,400,793.45 and 91,765,314.30

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Solution

The fourth proportional to 212,933,862.30, 319,400,793.45 and 91,765,314.30 is: 137,647,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,933,862.30 : 319,400,793.45 = 91,765,314.30 : x
  2. Step 2: Convert to fraction form
    212,933,862.30/319,400,793.45 = 91,765,314.30/x
  3. Step 3: Cross multiply
    212,933,862.30x = 319,400,793.45 × 91,765,314.30
  4. Step 4: Simplify right side
    212,933,862.30x = 29,309,914,198,608,628
  5. Step 5: Solve for x
    x = 29,309,914,198,608,628/212,933,862.30
  6. Step 6: Final answer
    x = 137,647,971.45

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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.