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Finding the Fourth Proportional to 139,189.34, 208,783.44 and 50,422.06

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Solution

The fourth proportional to 139,189.34, 208,783.44 and 50,422.06 is: 75,632.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,189.34 : 208,783.44 = 50,422.06 : x
  2. Step 2: Convert to fraction form
    139,189.34/208,783.44 = 50,422.06/x
  3. Step 3: Cross multiply
    139,189.34x = 208,783.44 × 50,422.06
  4. Step 4: Simplify right side
    139,189.34x = 10,527,291,138.69
  5. Step 5: Solve for x
    x = 10,527,291,138.69/139,189.34
  6. Step 6: Final answer
    x = 75,632.88

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.