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Finding the Fourth Proportional to 159,936, 220,731.12 and 92,868

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Solution

The fourth proportional to 159,936, 220,731.12 and 92,868 is: 128,169.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,936 : 220,731.12 = 92,868 : x
  2. Step 2: Convert to fraction form
    159,936/220,731.12 = 92,868/x
  3. Step 3: Cross multiply
    159,936x = 220,731.12 × 92,868
  4. Step 4: Simplify right side
    159,936x = 20,498,857,652.16
  5. Step 5: Solve for x
    x = 20,498,857,652.16/159,936
  6. Step 6: Final answer
    x = 128,169.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.