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Finding the Fourth Proportional to 139,286.01, 208,902.27 and 39,422.07

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Solution

The fourth proportional to 139,286.01, 208,902.27 and 39,422.07 is: 59,125.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,286.01 : 208,902.27 = 39,422.07 : x
  2. Step 2: Convert to fraction form
    139,286.01/208,902.27 = 39,422.07/x
  3. Step 3: Cross multiply
    139,286.01x = 208,902.27 × 39,422.07
  4. Step 4: Simplify right side
    139,286.01x = 8,235,359,911.10
  5. Step 5: Solve for x
    x = 8,235,359,911.10/139,286.01
  6. Step 6: Final answer
    x = 59,125.54

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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.