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Finding the Fourth Proportional to 199,885.27, 275,815.02 and 128,362.17

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Solution

The fourth proportional to 199,885.27, 275,815.02 and 128,362.17 is: 177,122.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,885.27 : 275,815.02 = 128,362.17 : x
  2. Step 2: Convert to fraction form
    199,885.27/275,815.02 = 128,362.17/x
  3. Step 3: Cross multiply
    199,885.27x = 275,815.02 × 128,362.17
  4. Step 4: Simplify right side
    199,885.27x = 35,404,214,450.00
  5. Step 5: Solve for x
    x = 35,404,214,450.00/199,885.27
  6. Step 6: Final answer
    x = 177,122.68

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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.