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Finding the Fourth Proportional to 156,269.92, 215,652.72 and 84,650.56

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Solution

The fourth proportional to 156,269.92, 215,652.72 and 84,650.56 is: 116,817.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,269.92 : 215,652.72 = 84,650.56 : x
  2. Step 2: Convert to fraction form
    156,269.92/215,652.72 = 84,650.56/x
  3. Step 3: Cross multiply
    156,269.92x = 215,652.72 × 84,650.56
  4. Step 4: Simplify right side
    156,269.92x = 18,255,123,513.52
  5. Step 5: Solve for x
    x = 18,255,123,513.52/156,269.92
  6. Step 6: Final answer
    x = 116,817.90

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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.