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Finding the Fourth Proportional to 101,299.73, 139,793.92 and 55,359.92

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Solution

The fourth proportional to 101,299.73, 139,793.92 and 55,359.92 is: 76,396.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,299.73 : 139,793.92 = 55,359.92 : x
  2. Step 2: Convert to fraction form
    101,299.73/139,793.92 = 55,359.92/x
  3. Step 3: Cross multiply
    101,299.73x = 139,793.92 × 55,359.92
  4. Step 4: Simplify right side
    101,299.73x = 7,738,980,438.77
  5. Step 5: Solve for x
    x = 7,738,980,438.77/101,299.73
  6. Step 6: Final answer
    x = 76,396.86

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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.