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Finding the Fourth Proportional to 139,644.08, 208,517.42 and 135,860.48

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Solution

The fourth proportional to 139,644.08, 208,517.42 and 135,860.48 is: 202,867.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,644.08 : 208,517.42 = 135,860.48 : x
  2. Step 2: Convert to fraction form
    139,644.08/208,517.42 = 135,860.48/x
  3. Step 3: Cross multiply
    139,644.08x = 208,517.42 × 135,860.48
  4. Step 4: Simplify right side
    139,644.08x = 28,329,276,769.56
  5. Step 5: Solve for x
    x = 28,329,276,769.56/139,644.08
  6. Step 6: Final answer
    x = 202,867.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.