Home / 107,659.20-161,517.60-76,555.20

Finding the Fourth Proportional to 107,659.20, 161,517.60 and 76,555.20

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Solution

The fourth proportional to 107,659.20, 161,517.60 and 76,555.20 is: 114,853.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,659.20 : 161,517.60 = 76,555.20 : x
  2. Step 2: Convert to fraction form
    107,659.20/161,517.60 = 76,555.20/x
  3. Step 3: Cross multiply
    107,659.20x = 161,517.60 × 76,555.20
  4. Step 4: Simplify right side
    107,659.20x = 12,365,012,171.52
  5. Step 5: Solve for x
    x = 12,365,012,171.52/107,659.20
  6. Step 6: Final answer
    x = 114,853.28

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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.