Home / 211,412,593.80-317,024,412.30-81,977,185.80

Finding the Fourth Proportional to 211,412,593.80, 317,024,412.30 and 81,977,185.80

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Solution

The fourth proportional to 211,412,593.80, 317,024,412.30 and 81,977,185.80 is: 122,929,143.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,412,593.80 : 317,024,412.30 = 81,977,185.80 : x
  2. Step 2: Convert to fraction form
    211,412,593.80/317,024,412.30 = 81,977,185.80/x
  3. Step 3: Cross multiply
    211,412,593.80x = 317,024,412.30 × 81,977,185.80
  4. Step 4: Simplify right side
    211,412,593.80x = 25,988,769,150,252,904
  5. Step 5: Solve for x
    x = 25,988,769,150,252,904/211,412,593.80
  6. Step 6: Final answer
    x = 122,929,143.83

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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.