Home / 108,118.60-161,789.10-73,126.60

Finding the Fourth Proportional to 108,118.60, 161,789.10 and 73,126.60

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Solution

The fourth proportional to 108,118.60, 161,789.10 and 73,126.60 is: 109,426.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,118.60 : 161,789.10 = 73,126.60 : x
  2. Step 2: Convert to fraction form
    108,118.60/161,789.10 = 73,126.60/x
  3. Step 3: Cross multiply
    108,118.60x = 161,789.10 × 73,126.60
  4. Step 4: Simplify right side
    108,118.60x = 11,831,086,800.06
  5. Step 5: Solve for x
    x = 11,831,086,800.06/108,118.60
  6. Step 6: Final answer
    x = 109,426.93

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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.