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Finding the Fourth Proportional to 108.34, 162.12 and 92.92

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Solution

The fourth proportional to 108.34, 162.12 and 92.92 is: 139.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.34 : 162.12 = 92.92 : x
  2. Step 2: Convert to fraction form
    108.34/162.12 = 92.92/x
  3. Step 3: Cross multiply
    108.34x = 162.12 × 92.92
  4. Step 4: Simplify right side
    108.34x = 15,064.19
  5. Step 5: Solve for x
    x = 15,064.19/108.34
  6. Step 6: Final answer
    x = 139.05

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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.