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Finding the Fourth Proportional to 108,469.26, 149,661.81 and 63,119.79

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Solution

The fourth proportional to 108,469.26, 149,661.81 and 63,119.79 is: 87,090.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,469.26 : 149,661.81 = 63,119.79 : x
  2. Step 2: Convert to fraction form
    108,469.26/149,661.81 = 63,119.79/x
  3. Step 3: Cross multiply
    108,469.26x = 149,661.81 × 63,119.79
  4. Step 4: Simplify right side
    108,469.26x = 9,446,622,018.22
  5. Step 5: Solve for x
    x = 9,446,622,018.22/108,469.26
  6. Step 6: Final answer
    x = 87,090.31

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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.