Home / 207,660,665.70-311,490,998.55-86,476,371.30

Finding the Fourth Proportional to 207,660,665.70, 311,490,998.55 and 86,476,371.30

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Solution

The fourth proportional to 207,660,665.70, 311,490,998.55 and 86,476,371.30 is: 129,714,556.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,660,665.70 : 311,490,998.55 = 86,476,371.30 : x
  2. Step 2: Convert to fraction form
    207,660,665.70/311,490,998.55 = 86,476,371.30/x
  3. Step 3: Cross multiply
    207,660,665.70x = 311,490,998.55 × 86,476,371.30
  4. Step 4: Simplify right side
    207,660,665.70x = 26,936,611,247,217,560
  5. Step 5: Solve for x
    x = 26,936,611,247,217,560/207,660,665.70
  6. Step 6: Final answer
    x = 129,714,556.95

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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.