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Finding the Fourth Proportional to 68,166.88, 102,265.68 and 20,786.16

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Solution

The fourth proportional to 68,166.88, 102,265.68 and 20,786.16 is: 31,183.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,166.88 : 102,265.68 = 20,786.16 : x
  2. Step 2: Convert to fraction form
    68,166.88/102,265.68 = 20,786.16/x
  3. Step 3: Cross multiply
    68,166.88x = 102,265.68 × 20,786.16
  4. Step 4: Simplify right side
    68,166.88x = 2,125,710,786.99
  5. Step 5: Solve for x
    x = 2,125,710,786.99/68,166.88
  6. Step 6: Final answer
    x = 31,183.92

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1.5x scale

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.