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Finding the Fourth Proportional to 139,682.95, 209,555.64 and 50,936.45

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Solution

The fourth proportional to 139,682.95, 209,555.64 and 50,936.45 is: 76,416.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,682.95 : 209,555.64 = 50,936.45 : x
  2. Step 2: Convert to fraction form
    139,682.95/209,555.64 = 50,936.45/x
  3. Step 3: Cross multiply
    139,682.95x = 209,555.64 × 50,936.45
  4. Step 4: Simplify right side
    139,682.95x = 10,674,019,546.19
  5. Step 5: Solve for x
    x = 10,674,019,546.19/139,682.95
  6. Step 6: Final answer
    x = 76,416.05

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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.