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Finding the Fourth Proportional to 178,834.80, 268,250.40 and 72,216.96

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Solution

The fourth proportional to 178,834.80, 268,250.40 and 72,216.96 is: 108,324.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,834.80 : 268,250.40 = 72,216.96 : x
  2. Step 2: Convert to fraction form
    178,834.80/268,250.40 = 72,216.96/x
  3. Step 3: Cross multiply
    178,834.80x = 268,250.40 × 72,216.96
  4. Step 4: Simplify right side
    178,834.80x = 19,372,228,406.78
  5. Step 5: Solve for x
    x = 19,372,228,406.78/178,834.80
  6. Step 6: Final answer
    x = 108,324.71

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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.