Home / 142,266.20-196,331.31-78,608.09

Finding the Fourth Proportional to 142,266.20, 196,331.31 and 78,608.09

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Solution

The fourth proportional to 142,266.20, 196,331.31 and 78,608.09 is: 108,481.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,266.20 : 196,331.31 = 78,608.09 : x
  2. Step 2: Convert to fraction form
    142,266.20/196,331.31 = 78,608.09/x
  3. Step 3: Cross multiply
    142,266.20x = 196,331.31 × 78,608.09
  4. Step 4: Simplify right side
    142,266.20x = 15,433,229,777.13
  5. Step 5: Solve for x
    x = 15,433,229,777.13/142,266.20
  6. Step 6: Final answer
    x = 108,481.36

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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.