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Finding the Fourth Proportional to 108,663.90, 162,801.45 and 67,062.30

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Solution

The fourth proportional to 108,663.90, 162,801.45 and 67,062.30 is: 100,473.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,663.90 : 162,801.45 = 67,062.30 : x
  2. Step 2: Convert to fraction form
    108,663.90/162,801.45 = 67,062.30/x
  3. Step 3: Cross multiply
    108,663.90x = 162,801.45 × 67,062.30
  4. Step 4: Simplify right side
    108,663.90x = 10,917,839,680.34
  5. Step 5: Solve for x
    x = 10,917,839,680.34/108,663.90
  6. Step 6: Final answer
    x = 100,473.48

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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.