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Finding the Fourth Proportional to 138,861.70, 208,299.83 and 44,099.44

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Solution

The fourth proportional to 138,861.70, 208,299.83 and 44,099.44 is: 66,151.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,861.70 : 208,299.83 = 44,099.44 : x
  2. Step 2: Convert to fraction form
    138,861.70/208,299.83 = 44,099.44/x
  3. Step 3: Cross multiply
    138,861.70x = 208,299.83 × 44,099.44
  4. Step 4: Simplify right side
    138,861.70x = 9,185,905,113.85
  5. Step 5: Solve for x
    x = 9,185,905,113.85/138,861.70
  6. Step 6: Final answer
    x = 66,151.47

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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.