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Finding the Fourth Proportional to 139,259.92, 209,275.44 and 135,883.84

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Solution

The fourth proportional to 139,259.92, 209,275.44 and 135,883.84 is: 204,201.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,259.92 : 209,275.44 = 135,883.84 : x
  2. Step 2: Convert to fraction form
    139,259.92/209,275.44 = 135,883.84/x
  3. Step 3: Cross multiply
    139,259.92x = 209,275.44 × 135,883.84
  4. Step 4: Simplify right side
    139,259.92x = 28,437,150,404.89
  5. Step 5: Solve for x
    x = 28,437,150,404.89/139,259.92
  6. Step 6: Final answer
    x = 204,201.97

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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.