Home / 108,023.20-161,982.96-55,405.60

Finding the Fourth Proportional to 108,023.20, 161,982.96 and 55,405.60

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Solution

The fourth proportional to 108,023.20, 161,982.96 and 55,405.60 is: 83,081.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,023.20 : 161,982.96 = 55,405.60 : x
  2. Step 2: Convert to fraction form
    108,023.20/161,982.96 = 55,405.60/x
  3. Step 3: Cross multiply
    108,023.20x = 161,982.96 × 55,405.60
  4. Step 4: Simplify right side
    108,023.20x = 8,974,763,088.58
  5. Step 5: Solve for x
    x = 8,974,763,088.58/108,023.20
  6. Step 6: Final answer
    x = 83,081.81

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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.