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Finding the Fourth Proportional to 156,229.64, 215,595.69 and 84,608

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Solution

The fourth proportional to 156,229.64, 215,595.69 and 84,608 is: 116,758.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,229.64 : 215,595.69 = 84,608 : x
  2. Step 2: Convert to fraction form
    156,229.64/215,595.69 = 84,608/x
  3. Step 3: Cross multiply
    156,229.64x = 215,595.69 × 84,608
  4. Step 4: Simplify right side
    156,229.64x = 18,241,120,139.52
  5. Step 5: Solve for x
    x = 18,241,120,139.52/156,229.64
  6. Step 6: Final answer
    x = 116,758.38

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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.