Home / 213,576,939.72-320,396,109.30-66,036,005.78

Finding the Fourth Proportional to 213,576,939.72, 320,396,109.30 and 66,036,005.78

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Solution

The fourth proportional to 213,576,939.72, 320,396,109.30 and 66,036,005.78 is: 99,063,500.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,576,939.72 : 320,396,109.30 = 66,036,005.78 : x
  2. Step 2: Convert to fraction form
    213,576,939.72/320,396,109.30 = 66,036,005.78/x
  3. Step 3: Cross multiply
    213,576,939.72x = 320,396,109.30 × 66,036,005.78
  4. Step 4: Simplify right side
    213,576,939.72x = 21,157,679,324,022,332
  5. Step 5: Solve for x
    x = 21,157,679,324,022,332/213,576,939.72
  6. Step 6: Final answer
    x = 99,063,500.73

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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.