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Finding the Fourth Proportional to 104,379.80, 156,503.10 and 68,800.04

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Solution

The fourth proportional to 104,379.80, 156,503.10 and 68,800.04 is: 103,156.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,379.80 : 156,503.10 = 68,800.04 : x
  2. Step 2: Convert to fraction form
    104,379.80/156,503.10 = 68,800.04/x
  3. Step 3: Cross multiply
    104,379.80x = 156,503.10 × 68,800.04
  4. Step 4: Simplify right side
    104,379.80x = 10,767,419,540.12
  5. Step 5: Solve for x
    x = 10,767,419,540.12/104,379.80
  6. Step 6: Final answer
    x = 103,156.16

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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.