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Finding the Fourth Proportional to 109.37, 164.06 and 96.68

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Solution

The fourth proportional to 109.37, 164.06 and 96.68 is: 145.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.37 : 164.06 = 96.68 : x
  2. Step 2: Convert to fraction form
    109.37/164.06 = 96.68/x
  3. Step 3: Cross multiply
    109.37x = 164.06 × 96.68
  4. Step 4: Simplify right side
    109.37x = 15,861.32
  5. Step 5: Solve for x
    x = 15,861.32/109.37
  6. Step 6: Final answer
    x = 145.02

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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.