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Finding the Fourth Proportional to 108.95, 162.61 and 93.45

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Solution

The fourth proportional to 108.95, 162.61 and 93.45 is: 139.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.95 : 162.61 = 93.45 : x
  2. Step 2: Convert to fraction form
    108.95/162.61 = 93.45/x
  3. Step 3: Cross multiply
    108.95x = 162.61 × 93.45
  4. Step 4: Simplify right side
    108.95x = 15,196.28
  5. Step 5: Solve for x
    x = 15,196.28/108.95
  6. Step 6: Final answer
    x = 139.49

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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.