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Finding the Fourth Proportional to 139,844.70, 209,797.43 and 51,098.06

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Solution

The fourth proportional to 139,844.70, 209,797.43 and 51,098.06 is: 76,658.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,844.70 : 209,797.43 = 51,098.06 : x
  2. Step 2: Convert to fraction form
    139,844.70/209,797.43 = 51,098.06/x
  3. Step 3: Cross multiply
    139,844.70x = 209,797.43 × 51,098.06
  4. Step 4: Simplify right side
    139,844.70x = 10,720,241,665.99
  5. Step 5: Solve for x
    x = 10,720,241,665.99/139,844.70
  6. Step 6: Final answer
    x = 76,658.19

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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.