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Finding the Fourth Proportional to 156,487.33, 234,724.48 and 72,219.49

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Solution

The fourth proportional to 156,487.33, 234,724.48 and 72,219.49 is: 108,326.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,487.33 : 234,724.48 = 72,219.49 : x
  2. Step 2: Convert to fraction form
    156,487.33/234,724.48 = 72,219.49/x
  3. Step 3: Cross multiply
    156,487.33x = 234,724.48 × 72,219.49
  4. Step 4: Simplify right side
    156,487.33x = 16,951,682,236.12
  5. Step 5: Solve for x
    x = 16,951,682,236.12/156,487.33
  6. Step 6: Final answer
    x = 108,326.23

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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.