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Finding the Fourth Proportional to 139,092.85, 208,639.28 and 33,912.73

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Solution

The fourth proportional to 139,092.85, 208,639.28 and 33,912.73 is: 50,869.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,092.85 : 208,639.28 = 33,912.73 : x
  2. Step 2: Convert to fraction form
    139,092.85/208,639.28 = 33,912.73/x
  3. Step 3: Cross multiply
    139,092.85x = 208,639.28 × 33,912.73
  4. Step 4: Simplify right side
    139,092.85x = 7,075,527,570.03
  5. Step 5: Solve for x
    x = 7,075,527,570.03/139,092.85
  6. Step 6: Final answer
    x = 50,869.10

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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.