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Finding the Fourth Proportional to 96.12, 143.28 and 93.24

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Solution

The fourth proportional to 96.12, 143.28 and 93.24 is: 138.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.12 : 143.28 = 93.24 : x
  2. Step 2: Convert to fraction form
    96.12/143.28 = 93.24/x
  3. Step 3: Cross multiply
    96.12x = 143.28 × 93.24
  4. Step 4: Simplify right side
    96.12x = 13,359.43
  5. Step 5: Solve for x
    x = 13,359.43/96.12
  6. Step 6: Final answer
    x = 138.99

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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.