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Finding the Fourth Proportional to 112,489.82, 168,797 and 67,400.36

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Solution

The fourth proportional to 112,489.82, 168,797 and 67,400.36 is: 101,137.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,489.82 : 168,797 = 67,400.36 : x
  2. Step 2: Convert to fraction form
    112,489.82/168,797 = 67,400.36/x
  3. Step 3: Cross multiply
    112,489.82x = 168,797 × 67,400.36
  4. Step 4: Simplify right side
    112,489.82x = 11,376,978,566.92
  5. Step 5: Solve for x
    x = 11,376,978,566.92/112,489.82
  6. Step 6: Final answer
    x = 101,137.85

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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.