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Finding the Fourth Proportional to 139,334.46, 208,993.49 and 45,840.21

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Solution

The fourth proportional to 139,334.46, 208,993.49 and 45,840.21 is: 68,757.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,334.46 : 208,993.49 = 45,840.21 : x
  2. Step 2: Convert to fraction form
    139,334.46/208,993.49 = 45,840.21/x
  3. Step 3: Cross multiply
    139,334.46x = 208,993.49 × 45,840.21
  4. Step 4: Simplify right side
    139,334.46x = 9,580,305,241.03
  5. Step 5: Solve for x
    x = 9,580,305,241.03/139,334.46
  6. Step 6: Final answer
    x = 68,757.62

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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.