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Finding the Fourth Proportional to 139,525.60, 209,286.52 and 34,345.44

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Solution

The fourth proportional to 139,525.60, 209,286.52 and 34,345.44 is: 51,517.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,525.60 : 209,286.52 = 34,345.44 : x
  2. Step 2: Convert to fraction form
    139,525.60/209,286.52 = 34,345.44/x
  3. Step 3: Cross multiply
    139,525.60x = 209,286.52 × 34,345.44
  4. Step 4: Simplify right side
    139,525.60x = 7,188,037,615.47
  5. Step 5: Solve for x
    x = 7,188,037,615.47/139,525.60
  6. Step 6: Final answer
    x = 51,517.70

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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.