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Finding the Fourth Proportional to 108,604.96, 149,874.63 and 66,163.51

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Solution

The fourth proportional to 108,604.96, 149,874.63 and 66,163.51 is: 91,305.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,604.96 : 149,874.63 = 66,163.51 : x
  2. Step 2: Convert to fraction form
    108,604.96/149,874.63 = 66,163.51/x
  3. Step 3: Cross multiply
    108,604.96x = 149,874.63 × 66,163.51
  4. Step 4: Simplify right side
    108,604.96x = 9,916,231,580.75
  5. Step 5: Solve for x
    x = 9,916,231,580.75/108,604.96
  6. Step 6: Final answer
    x = 91,305.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.