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Finding the Fourth Proportional to 139,745.26, 209,621.36 and 50,998.74

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Solution

The fourth proportional to 139,745.26, 209,621.36 and 50,998.74 is: 76,499.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,745.26 : 209,621.36 = 50,998.74 : x
  2. Step 2: Convert to fraction form
    139,745.26/209,621.36 = 50,998.74/x
  3. Step 3: Cross multiply
    139,745.26x = 209,621.36 × 50,998.74
  4. Step 4: Simplify right side
    139,745.26x = 10,690,425,237.09
  5. Step 5: Solve for x
    x = 10,690,425,237.09/139,745.26
  6. Step 6: Final answer
    x = 76,499.38

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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.