Home / 107,620.20-161,411.10-68,106.60

Finding the Fourth Proportional to 107,620.20, 161,411.10 and 68,106.60

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Solution

The fourth proportional to 107,620.20, 161,411.10 and 68,106.60 is: 102,147.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,620.20 : 161,411.10 = 68,106.60 : x
  2. Step 2: Convert to fraction form
    107,620.20/161,411.10 = 68,106.60/x
  3. Step 3: Cross multiply
    107,620.20x = 161,411.10 × 68,106.60
  4. Step 4: Simplify right side
    107,620.20x = 10,993,161,223.26
  5. Step 5: Solve for x
    x = 10,993,161,223.26/107,620.20
  6. Step 6: Final answer
    x = 102,147.75

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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.