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Finding the Fourth Proportional to 96.16, 143.72 and 93.76

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Solution

The fourth proportional to 96.16, 143.72 and 93.76 is: 140.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.16 : 143.72 = 93.76 : x
  2. Step 2: Convert to fraction form
    96.16/143.72 = 93.76/x
  3. Step 3: Cross multiply
    96.16x = 143.72 × 93.76
  4. Step 4: Simplify right side
    96.16x = 13,475.19
  5. Step 5: Solve for x
    x = 13,475.19/96.16
  6. Step 6: Final answer
    x = 140.13

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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.