Home / 143,196.45-197,618.09-79,532.88

Finding the Fourth Proportional to 143,196.45, 197,618.09 and 79,532.88

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Solution

The fourth proportional to 143,196.45, 197,618.09 and 79,532.88 is: 109,759.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,196.45 : 197,618.09 = 79,532.88 : x
  2. Step 2: Convert to fraction form
    143,196.45/197,618.09 = 79,532.88/x
  3. Step 3: Cross multiply
    143,196.45x = 197,618.09 × 79,532.88
  4. Step 4: Simplify right side
    143,196.45x = 15,717,135,837.80
  5. Step 5: Solve for x
    x = 15,717,135,837.80/143,196.45
  6. Step 6: Final answer
    x = 109,759.26

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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.