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Finding the Fourth Proportional to 156,101.12, 215,419.56 and 84,481.66

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Solution

The fourth proportional to 156,101.12, 215,419.56 and 84,481.66 is: 116,584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,101.12 : 215,419.56 = 84,481.66 : x
  2. Step 2: Convert to fraction form
    156,101.12/215,419.56 = 84,481.66/x
  3. Step 3: Cross multiply
    156,101.12x = 215,419.56 × 84,481.66
  4. Step 4: Simplify right side
    156,101.12x = 18,199,002,025.27
  5. Step 5: Solve for x
    x = 18,199,002,025.27/156,101.12
  6. Step 6: Final answer
    x = 116,584.70

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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.