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Finding the Fourth Proportional to 104,427.30, 156,640.95 and 68,997.90

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Solution

The fourth proportional to 104,427.30, 156,640.95 and 68,997.90 is: 103,496.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,427.30 : 156,640.95 = 68,997.90 : x
  2. Step 2: Convert to fraction form
    104,427.30/156,640.95 = 68,997.90/x
  3. Step 3: Cross multiply
    104,427.30x = 156,640.95 × 68,997.90
  4. Step 4: Simplify right side
    104,427.30x = 10,807,896,604.01
  5. Step 5: Solve for x
    x = 10,807,896,604.01/104,427.30
  6. Step 6: Final answer
    x = 103,496.85

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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.