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Finding the Fourth Proportional to 109.87, 151.59 and 96.88

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Solution

The fourth proportional to 109.87, 151.59 and 96.88 is: 133.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.87 : 151.59 = 96.88 : x
  2. Step 2: Convert to fraction form
    109.87/151.59 = 96.88/x
  3. Step 3: Cross multiply
    109.87x = 151.59 × 96.88
  4. Step 4: Simplify right side
    109.87x = 14,686.04
  5. Step 5: Solve for x
    x = 14,686.04/109.87
  6. Step 6: Final answer
    x = 133.67

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