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Finding the Fourth Proportional to 101,910.36, 152,865.52 and 66,841.88

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Solution

The fourth proportional to 101,910.36, 152,865.52 and 66,841.88 is: 100,262.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,910.36 : 152,865.52 = 66,841.88 : x
  2. Step 2: Convert to fraction form
    101,910.36/152,865.52 = 66,841.88/x
  3. Step 3: Cross multiply
    101,910.36x = 152,865.52 × 66,841.88
  4. Step 4: Simplify right side
    101,910.36x = 10,217,818,743.98
  5. Step 5: Solve for x
    x = 10,217,818,743.98/101,910.36
  6. Step 6: Final answer
    x = 100,262.81

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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.