Home / 143,491,161.66-198,005,171.28-79,906,697.19

Finding the Fourth Proportional to 143,491,161.66, 198,005,171.28 and 79,906,697.19

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Solution

The fourth proportional to 143,491,161.66, 198,005,171.28 and 79,906,697.19 is: 110,264,207.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,491,161.66 : 198,005,171.28 = 79,906,697.19 : x
  2. Step 2: Convert to fraction form
    143,491,161.66/198,005,171.28 = 79,906,697.19/x
  3. Step 3: Cross multiply
    143,491,161.66x = 198,005,171.28 × 79,906,697.19
  4. Step 4: Simplify right side
    143,491,161.66x = 15,821,939,263,525,044
  5. Step 5: Solve for x
    x = 15,821,939,263,525,044/143,491,161.66
  6. Step 6: Final answer
    x = 110,264,207.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.