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Finding the Fourth Proportional to 108.83, 149.99 and 88.17

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Solution

The fourth proportional to 108.83, 149.99 and 88.17 is: 121.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.83 : 149.99 = 88.17 : x
  2. Step 2: Convert to fraction form
    108.83/149.99 = 88.17/x
  3. Step 3: Cross multiply
    108.83x = 149.99 × 88.17
  4. Step 4: Simplify right side
    108.83x = 13,224.62
  5. Step 5: Solve for x
    x = 13,224.62/108.83
  6. Step 6: Final answer
    x = 121.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.