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Finding the Fourth Proportional to 139,025.79, 208,398.47 and 54,753.39

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Solution

The fourth proportional to 139,025.79, 208,398.47 and 54,753.39 is: 82,074.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,025.79 : 208,398.47 = 54,753.39 : x
  2. Step 2: Convert to fraction form
    139,025.79/208,398.47 = 54,753.39/x
  3. Step 3: Cross multiply
    139,025.79x = 208,398.47 × 54,753.39
  4. Step 4: Simplify right side
    139,025.79x = 11,410,523,323.65
  5. Step 5: Solve for x
    x = 11,410,523,323.65/139,025.79
  6. Step 6: Final answer
    x = 82,074.87

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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.