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Finding the Fourth Proportional to 199,371, 275,128.20 and 108,727.68

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Solution

The fourth proportional to 199,371, 275,128.20 and 108,727.68 is: 150,042.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,371 : 275,128.20 = 108,727.68 : x
  2. Step 2: Convert to fraction form
    199,371/275,128.20 = 108,727.68/x
  3. Step 3: Cross multiply
    199,371x = 275,128.20 × 108,727.68
  4. Step 4: Simplify right side
    199,371x = 29,914,050,888.58
  5. Step 5: Solve for x
    x = 29,914,050,888.58/199,371
  6. Step 6: Final answer
    x = 150,042.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.