Home / 107,481.15-161,241.21-87,666.28

Finding the Fourth Proportional to 107,481.15, 161,241.21 and 87,666.28

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Solution

The fourth proportional to 107,481.15, 161,241.21 and 87,666.28 is: 131,515.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,481.15 : 161,241.21 = 87,666.28 : x
  2. Step 2: Convert to fraction form
    107,481.15/161,241.21 = 87,666.28/x
  3. Step 3: Cross multiply
    107,481.15x = 161,241.21 × 87,666.28
  4. Step 4: Simplify right side
    107,481.15x = 14,135,416,660.30
  5. Step 5: Solve for x
    x = 14,135,416,660.30/107,481.15
  6. Step 6: Final answer
    x = 131,515.31

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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.