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Finding the Fourth Proportional to 101,886.87, 140,604.38 and 63,668.61

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Solution

The fourth proportional to 101,886.87, 140,604.38 and 63,668.61 is: 87,862.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,886.87 : 140,604.38 = 63,668.61 : x
  2. Step 2: Convert to fraction form
    101,886.87/140,604.38 = 63,668.61/x
  3. Step 3: Cross multiply
    101,886.87x = 140,604.38 × 63,668.61
  4. Step 4: Simplify right side
    101,886.87x = 8,952,085,116.17
  5. Step 5: Solve for x
    x = 8,952,085,116.17/101,886.87
  6. Step 6: Final answer
    x = 87,862.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.