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Finding the Fourth Proportional to 162,227.84, 243,379.20 and 68,737.28

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Solution

The fourth proportional to 162,227.84, 243,379.20 and 68,737.28 is: 103,121.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,227.84 : 243,379.20 = 68,737.28 : x
  2. Step 2: Convert to fraction form
    162,227.84/243,379.20 = 68,737.28/x
  3. Step 3: Cross multiply
    162,227.84x = 243,379.20 × 68,737.28
  4. Step 4: Simplify right side
    162,227.84x = 16,729,224,216.58
  5. Step 5: Solve for x
    x = 16,729,224,216.58/162,227.84
  6. Step 6: Final answer
    x = 103,121.78

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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.