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Finding the Fourth Proportional to 139,109.44, 208,660.44 and 39,276.52

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Solution

The fourth proportional to 139,109.44, 208,660.44 and 39,276.52 is: 58,913.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,109.44 : 208,660.44 = 39,276.52 : x
  2. Step 2: Convert to fraction form
    139,109.44/208,660.44 = 39,276.52/x
  3. Step 3: Cross multiply
    139,109.44x = 208,660.44 × 39,276.52
  4. Step 4: Simplify right side
    139,109.44x = 8,195,455,944.87
  5. Step 5: Solve for x
    x = 8,195,455,944.87/139,109.44
  6. Step 6: Final answer
    x = 58,913.73

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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.