Home / 143,195.45-197,616.71-79,531.88

Finding the Fourth Proportional to 143,195.45, 197,616.71 and 79,531.88

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Solution

The fourth proportional to 143,195.45, 197,616.71 and 79,531.88 is: 109,757.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,195.45 : 197,616.71 = 79,531.88 : x
  2. Step 2: Convert to fraction form
    143,195.45/197,616.71 = 79,531.88/x
  3. Step 3: Cross multiply
    143,195.45x = 197,616.71 × 79,531.88
  4. Step 4: Simplify right side
    143,195.45x = 15,716,827,676.46
  5. Step 5: Solve for x
    x = 15,716,827,676.46/143,195.45
  6. Step 6: Final answer
    x = 109,757.87

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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.