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Finding the Fourth Proportional to 156,645.52, 216,171.04 and 85,025.56

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Solution

The fourth proportional to 156,645.52, 216,171.04 and 85,025.56 is: 117,335.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,645.52 : 216,171.04 = 85,025.56 : x
  2. Step 2: Convert to fraction form
    156,645.52/216,171.04 = 85,025.56/x
  3. Step 3: Cross multiply
    156,645.52x = 216,171.04 × 85,025.56
  4. Step 4: Simplify right side
    156,645.52x = 18,380,063,731.78
  5. Step 5: Solve for x
    x = 18,380,063,731.78/156,645.52
  6. Step 6: Final answer
    x = 117,335.39

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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.