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Finding the Fourth Proportional to 96, 143.36 and 88.71

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Solution

The fourth proportional to 96, 143.36 and 88.71 is: 132.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    96 : 143.36 = 88.71 : x
  2. Step 2: Convert to fraction form
    96/143.36 = 88.71/x
  3. Step 3: Cross multiply
    96x = 143.36 × 88.71
  4. Step 4: Simplify right side
    96x = 12,717.02
  5. Step 5: Solve for x
    x = 12,717.02/96
  6. Step 6: Final answer
    x = 132.47

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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.