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Finding the Fourth Proportional to 96.45, 143.64 and 93.88

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Solution

The fourth proportional to 96.45, 143.64 and 93.88 is: 139.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.45 : 143.64 = 93.88 : x
  2. Step 2: Convert to fraction form
    96.45/143.64 = 93.88/x
  3. Step 3: Cross multiply
    96.45x = 143.64 × 93.88
  4. Step 4: Simplify right side
    96.45x = 13,484.92
  5. Step 5: Solve for x
    x = 13,484.92/96.45
  6. Step 6: Final answer
    x = 139.81

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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.