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Finding the Fourth Proportional to 108,173.97, 149,165.42 and 74,231.96

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Solution

The fourth proportional to 108,173.97, 149,165.42 and 74,231.96 is: 102,361.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,173.97 : 149,165.42 = 74,231.96 : x
  2. Step 2: Convert to fraction form
    108,173.97/149,165.42 = 74,231.96/x
  3. Step 3: Cross multiply
    108,173.97x = 149,165.42 × 74,231.96
  4. Step 4: Simplify right side
    108,173.97x = 11,072,840,373.84
  5. Step 5: Solve for x
    x = 11,072,840,373.84/108,173.97
  6. Step 6: Final answer
    x = 102,361.41

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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.