Home / 107,626.20-161,420.10-68,112.60

Finding the Fourth Proportional to 107,626.20, 161,420.10 and 68,112.60

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Solution

The fourth proportional to 107,626.20, 161,420.10 and 68,112.60 is: 102,156.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,626.20 : 161,420.10 = 68,112.60 : x
  2. Step 2: Convert to fraction form
    107,626.20/161,420.10 = 68,112.60/x
  3. Step 3: Cross multiply
    107,626.20x = 161,420.10 × 68,112.60
  4. Step 4: Simplify right side
    107,626.20x = 10,994,742,703.26
  5. Step 5: Solve for x
    x = 10,994,742,703.26/107,626.20
  6. Step 6: Final answer
    x = 102,156.75

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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.