Home / 135,985.56-203,805.26-76,854.20

Finding the Fourth Proportional to 135,985.56, 203,805.26 and 76,854.20

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Solution

The fourth proportional to 135,985.56, 203,805.26 and 76,854.20 is: 115,183.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,985.56 : 203,805.26 = 76,854.20 : x
  2. Step 2: Convert to fraction form
    135,985.56/203,805.26 = 76,854.20/x
  3. Step 3: Cross multiply
    135,985.56x = 203,805.26 × 76,854.20
  4. Step 4: Simplify right side
    135,985.56x = 15,663,290,213.09
  5. Step 5: Solve for x
    x = 15,663,290,213.09/135,985.56
  6. Step 6: Final answer
    x = 115,183.48

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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.