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Finding the Fourth Proportional to 128,601, 192,901.52 and 53,680.27

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Solution

The fourth proportional to 128,601, 192,901.52 and 53,680.27 is: 80,520.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,601 : 192,901.52 = 53,680.27 : x
  2. Step 2: Convert to fraction form
    128,601/192,901.52 = 53,680.27/x
  3. Step 3: Cross multiply
    128,601x = 192,901.52 × 53,680.27
  4. Step 4: Simplify right side
    128,601x = 10,355,005,677.01
  5. Step 5: Solve for x
    x = 10,355,005,677.01/128,601
  6. Step 6: Final answer
    x = 80,520.41

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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.