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Finding the Fourth Proportional to 139,691.70, 209,535.03 and 50,944.32

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Solution

The fourth proportional to 139,691.70, 209,535.03 and 50,944.32 is: 76,415.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,691.70 : 209,535.03 = 50,944.32 : x
  2. Step 2: Convert to fraction form
    139,691.70/209,535.03 = 50,944.32/x
  3. Step 3: Cross multiply
    139,691.70x = 209,535.03 × 50,944.32
  4. Step 4: Simplify right side
    139,691.70x = 10,674,619,619.53
  5. Step 5: Solve for x
    x = 10,674,619,619.53/139,691.70
  6. Step 6: Final answer
    x = 76,415.56

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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.