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Finding the Fourth Proportional to 156,563.62, 215,924.54 and 108,930.76

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Solution

The fourth proportional to 156,563.62, 215,924.54 and 108,930.76 is: 150,231.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,563.62 : 215,924.54 = 108,930.76 : x
  2. Step 2: Convert to fraction form
    156,563.62/215,924.54 = 108,930.76/x
  3. Step 3: Cross multiply
    156,563.62x = 215,924.54 × 108,930.76
  4. Step 4: Simplify right side
    156,563.62x = 23,520,823,160.39
  5. Step 5: Solve for x
    x = 23,520,823,160.39/156,563.62
  6. Step 6: Final answer
    x = 150,231.73

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1.5x scale

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.