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Finding the Fourth Proportional to 128,146.62, 192,198.06 and 34,630.50

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Solution

The fourth proportional to 128,146.62, 192,198.06 and 34,630.50 is: 51,939.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,146.62 : 192,198.06 = 34,630.50 : x
  2. Step 2: Convert to fraction form
    128,146.62/192,198.06 = 34,630.50/x
  3. Step 3: Cross multiply
    128,146.62x = 192,198.06 × 34,630.50
  4. Step 4: Simplify right side
    128,146.62x = 6,655,914,916.83
  5. Step 5: Solve for x
    x = 6,655,914,916.83/128,146.62
  6. Step 6: Final answer
    x = 51,939.84

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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.