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Finding the Fourth Proportional to 128,002.70, 192,046.17 and 60,563.72

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Solution

The fourth proportional to 128,002.70, 192,046.17 and 60,563.72 is: 90,865.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,002.70 : 192,046.17 = 60,563.72 : x
  2. Step 2: Convert to fraction form
    128,002.70/192,046.17 = 60,563.72/x
  3. Step 3: Cross multiply
    128,002.70x = 192,046.17 × 60,563.72
  4. Step 4: Simplify right side
    128,002.70x = 11,631,030,466.95
  5. Step 5: Solve for x
    x = 11,631,030,466.95/128,002.70
  6. Step 6: Final answer
    x = 90,865.51

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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.