Home / 107,632.20-161,429.10-68,118.60

Finding the Fourth Proportional to 107,632.20, 161,429.10 and 68,118.60

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Solution

The fourth proportional to 107,632.20, 161,429.10 and 68,118.60 is: 102,165.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,632.20 : 161,429.10 = 68,118.60 : x
  2. Step 2: Convert to fraction form
    107,632.20/161,429.10 = 68,118.60/x
  3. Step 3: Cross multiply
    107,632.20x = 161,429.10 × 68,118.60
  4. Step 4: Simplify right side
    107,632.20x = 10,996,324,291.26
  5. Step 5: Solve for x
    x = 10,996,324,291.26/107,632.20
  6. Step 6: Final answer
    x = 102,165.75

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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.