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Finding the Fourth Proportional to 139,191.27, 208,786.91 and 34,010.07

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Solution

The fourth proportional to 139,191.27, 208,786.91 and 34,010.07 is: 51,015.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,191.27 : 208,786.91 = 34,010.07 : x
  2. Step 2: Convert to fraction form
    139,191.27/208,786.91 = 34,010.07/x
  3. Step 3: Cross multiply
    139,191.27x = 208,786.91 × 34,010.07
  4. Step 4: Simplify right side
    139,191.27x = 7,100,857,254.13
  5. Step 5: Solve for x
    x = 7,100,857,254.13/139,191.27
  6. Step 6: Final answer
    x = 51,015.11

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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.