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Finding the Fourth Proportional to 203,137.88, 304,520.19 and 69,986.48

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Solution

The fourth proportional to 203,137.88, 304,520.19 and 69,986.48 is: 104,915.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,137.88 : 304,520.19 = 69,986.48 : x
  2. Step 2: Convert to fraction form
    203,137.88/304,520.19 = 69,986.48/x
  3. Step 3: Cross multiply
    203,137.88x = 304,520.19 × 69,986.48
  4. Step 4: Simplify right side
    203,137.88x = 21,312,296,187.03
  5. Step 5: Solve for x
    x = 21,312,296,187.03/203,137.88
  6. Step 6: Final answer
    x = 104,915.42

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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.