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Finding the Fourth Proportional to 178,772.70, 268,155.60 and 72,153.84

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Solution

The fourth proportional to 178,772.70, 268,155.60 and 72,153.84 is: 108,229.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,772.70 : 268,155.60 = 72,153.84 : x
  2. Step 2: Convert to fraction form
    178,772.70/268,155.60 = 72,153.84/x
  3. Step 3: Cross multiply
    178,772.70x = 268,155.60 × 72,153.84
  4. Step 4: Simplify right side
    178,772.70x = 19,348,456,257.50
  5. Step 5: Solve for x
    x = 19,348,456,257.50/178,772.70
  6. Step 6: Final answer
    x = 108,229.37

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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.