Home / 108,004.20-162,179.10-81,738.60

Finding the Fourth Proportional to 108,004.20, 162,179.10 and 81,738.60

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Solution

The fourth proportional to 108,004.20, 162,179.10 and 81,738.60 is: 122,738.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,004.20 : 162,179.10 = 81,738.60 : x
  2. Step 2: Convert to fraction form
    108,004.20/162,179.10 = 81,738.60/x
  3. Step 3: Cross multiply
    108,004.20x = 162,179.10 × 81,738.60
  4. Step 4: Simplify right side
    108,004.20x = 13,256,292,583.26
  5. Step 5: Solve for x
    x = 13,256,292,583.26/108,004.20
  6. Step 6: Final answer
    x = 122,738.68

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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.