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Finding the Fourth Proportional to 139,993.29, 209,990.07 and 34,812.27

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Solution

The fourth proportional to 139,993.29, 209,990.07 and 34,812.27 is: 52,218.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,993.29 : 209,990.07 = 34,812.27 : x
  2. Step 2: Convert to fraction form
    139,993.29/209,990.07 = 34,812.27/x
  3. Step 3: Cross multiply
    139,993.29x = 209,990.07 × 34,812.27
  4. Step 4: Simplify right side
    139,993.29x = 7,310,231,014.16
  5. Step 5: Solve for x
    x = 7,310,231,014.16/139,993.29
  6. Step 6: Final answer
    x = 52,218.44

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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.