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Finding the Fourth Proportional to 108,129.72, 162,194.04 and 29,243.64

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Solution

The fourth proportional to 108,129.72, 162,194.04 and 29,243.64 is: 43,865.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,129.72 : 162,194.04 = 29,243.64 : x
  2. Step 2: Convert to fraction form
    108,129.72/162,194.04 = 29,243.64/x
  3. Step 3: Cross multiply
    108,129.72x = 162,194.04 × 29,243.64
  4. Step 4: Simplify right side
    108,129.72x = 4,743,144,115.91
  5. Step 5: Solve for x
    x = 4,743,144,115.91/108,129.72
  6. Step 6: Final answer
    x = 43,865.31

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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.