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Finding the Fourth Proportional to 96,663.92, 144,855.68 and 68,638.86

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Solution

The fourth proportional to 96,663.92, 144,855.68 and 68,638.86 is: 102,858.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,663.92 : 144,855.68 = 68,638.86 : x
  2. Step 2: Convert to fraction form
    96,663.92/144,855.68 = 68,638.86/x
  3. Step 3: Cross multiply
    96,663.92x = 144,855.68 × 68,638.86
  4. Step 4: Simplify right side
    96,663.92x = 9,942,728,396.53
  5. Step 5: Solve for x
    x = 9,942,728,396.53/96,663.92
  6. Step 6: Final answer
    x = 102,858.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.