Home / 213,023,008.80-319,534,513.20-91,854,460.80

Finding the Fourth Proportional to 213,023,008.80, 319,534,513.20 and 91,854,460.80

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Solution

The fourth proportional to 213,023,008.80, 319,534,513.20 and 91,854,460.80 is: 137,781,691.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,023,008.80 : 319,534,513.20 = 91,854,460.80 : x
  2. Step 2: Convert to fraction form
    213,023,008.80/319,534,513.20 = 91,854,460.80/x
  3. Step 3: Cross multiply
    213,023,008.80x = 319,534,513.20 × 91,854,460.80
  4. Step 4: Simplify right side
    213,023,008.80x = 29,350,670,416,976,480
  5. Step 5: Solve for x
    x = 29,350,670,416,976,480/213,023,008.80
  6. Step 6: Final answer
    x = 137,781,691.20

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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.