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Finding the Fourth Proportional to 139,593.96, 209,511.83 and 73,080.61

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Solution

The fourth proportional to 139,593.96, 209,511.83 and 73,080.61 is: 109,684.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,593.96 : 209,511.83 = 73,080.61 : x
  2. Step 2: Convert to fraction form
    139,593.96/209,511.83 = 73,080.61/x
  3. Step 3: Cross multiply
    139,593.96x = 209,511.83 × 73,080.61
  4. Step 4: Simplify right side
    139,593.96x = 15,311,251,973.21
  5. Step 5: Solve for x
    x = 15,311,251,973.21/139,593.96
  6. Step 6: Final answer
    x = 109,684.20

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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.