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Finding the Fourth Proportional to 203,121.89, 304,711.19 and 84,766.11

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Solution

The fourth proportional to 203,121.89, 304,711.19 and 84,766.11 is: 127,161.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,121.89 : 304,711.19 = 84,766.11 : x
  2. Step 2: Convert to fraction form
    203,121.89/304,711.19 = 84,766.11/x
  3. Step 3: Cross multiply
    203,121.89x = 304,711.19 × 84,766.11
  4. Step 4: Simplify right side
    203,121.89x = 25,829,181,825.94
  5. Step 5: Solve for x
    x = 25,829,181,825.94/203,121.89
  6. Step 6: Final answer
    x = 127,161.00

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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.