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Finding the Fourth Proportional to 108,404.82, 162,607.41 and 71,199.90

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Solution

The fourth proportional to 108,404.82, 162,607.41 and 71,199.90 is: 106,799.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,404.82 : 162,607.41 = 71,199.90 : x
  2. Step 2: Convert to fraction form
    108,404.82/162,607.41 = 71,199.90/x
  3. Step 3: Cross multiply
    108,404.82x = 162,607.41 × 71,199.90
  4. Step 4: Simplify right side
    108,404.82x = 11,577,631,331.26
  5. Step 5: Solve for x
    x = 11,577,631,331.26/108,404.82
  6. Step 6: Final answer
    x = 106,799.97

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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.