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Finding the Fourth Proportional to 139,531.77, 209,173.73 and 50,768.73

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Solution

The fourth proportional to 139,531.77, 209,173.73 and 50,768.73 is: 76,108.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,531.77 : 209,173.73 = 50,768.73 : x
  2. Step 2: Convert to fraction form
    139,531.77/209,173.73 = 50,768.73/x
  3. Step 3: Cross multiply
    139,531.77x = 209,173.73 × 50,768.73
  4. Step 4: Simplify right side
    139,531.77x = 10,619,484,367.62
  5. Step 5: Solve for x
    x = 10,619,484,367.62/139,531.77
  6. Step 6: Final answer
    x = 76,108.00

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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.