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Finding the Fourth Proportional to 108,305.89, 162,459.29 and 71,101.37

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Solution

The fourth proportional to 108,305.89, 162,459.29 and 71,101.37 is: 106,652.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,305.89 : 162,459.29 = 71,101.37 : x
  2. Step 2: Convert to fraction form
    108,305.89/162,459.29 = 71,101.37/x
  3. Step 3: Cross multiply
    108,305.89x = 162,459.29 × 71,101.37
  4. Step 4: Simplify right side
    108,305.89x = 11,551,078,138.87
  5. Step 5: Solve for x
    x = 11,551,078,138.87/108,305.89
  6. Step 6: Final answer
    x = 106,652.36

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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.