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Finding the Fourth Proportional to 108.95, 162.54 and 88.43

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Solution

The fourth proportional to 108.95, 162.54 and 88.43 is: 131.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.95 : 162.54 = 88.43 : x
  2. Step 2: Convert to fraction form
    108.95/162.54 = 88.43/x
  3. Step 3: Cross multiply
    108.95x = 162.54 × 88.43
  4. Step 4: Simplify right side
    108.95x = 14,372.60
  5. Step 5: Solve for x
    x = 14,372.60/108.95
  6. Step 6: Final answer
    x = 131.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.