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Finding the Fourth Proportional to 203,647.52, 305,348.04 and 91,306.88

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Solution

The fourth proportional to 203,647.52, 305,348.04 and 91,306.88 is: 136,905.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,647.52 : 305,348.04 = 91,306.88 : x
  2. Step 2: Convert to fraction form
    203,647.52/305,348.04 = 91,306.88/x
  3. Step 3: Cross multiply
    203,647.52x = 305,348.04 × 91,306.88
  4. Step 4: Simplify right side
    203,647.52x = 27,880,376,846.52
  5. Step 5: Solve for x
    x = 27,880,376,846.52/203,647.52
  6. Step 6: Final answer
    x = 136,905.06

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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.