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Finding the Fourth Proportional to 139,591.71, 209,220.75 and 50,796.90

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Solution

The fourth proportional to 139,591.71, 209,220.75 and 50,796.90 is: 76,134.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,591.71 : 209,220.75 = 50,796.90 : x
  2. Step 2: Convert to fraction form
    139,591.71/209,220.75 = 50,796.90/x
  3. Step 3: Cross multiply
    139,591.71x = 209,220.75 × 50,796.90
  4. Step 4: Simplify right side
    139,591.71x = 10,627,765,515.68
  5. Step 5: Solve for x
    x = 10,627,765,515.68/139,591.71
  6. Step 6: Final answer
    x = 76,134.65

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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.