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Finding the Fourth Proportional to 139,083.14, 208,710.37 and 54,828.97

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Solution

The fourth proportional to 139,083.14, 208,710.37 and 54,828.97 is: 82,277.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,083.14 : 208,710.37 = 54,828.97 : x
  2. Step 2: Convert to fraction form
    139,083.14/208,710.37 = 54,828.97/x
  3. Step 3: Cross multiply
    139,083.14x = 208,710.37 × 54,828.97
  4. Step 4: Simplify right side
    139,083.14x = 11,443,373,297.72
  5. Step 5: Solve for x
    x = 11,443,373,297.72/139,083.14
  6. Step 6: Final answer
    x = 82,277.21

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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.