Home / 107,882.25-161,540.40-76,120.86

Finding the Fourth Proportional to 107,882.25, 161,540.40 and 76,120.86

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Solution

The fourth proportional to 107,882.25, 161,540.40 and 76,120.86 is: 113,981.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,882.25 : 161,540.40 = 76,120.86 : x
  2. Step 2: Convert to fraction form
    107,882.25/161,540.40 = 76,120.86/x
  3. Step 3: Cross multiply
    107,882.25x = 161,540.40 × 76,120.86
  4. Step 4: Simplify right side
    107,882.25x = 12,296,594,172.74
  5. Step 5: Solve for x
    x = 12,296,594,172.74/107,882.25
  6. Step 6: Final answer
    x = 113,981.63

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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.