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Finding the Fourth Proportional to 156,761.67, 216,183.73 and 120,894.87

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Solution

The fourth proportional to 156,761.67, 216,183.73 and 120,894.87 is: 166,721.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,761.67 : 216,183.73 = 120,894.87 : x
  2. Step 2: Convert to fraction form
    156,761.67/216,183.73 = 120,894.87/x
  3. Step 3: Cross multiply
    156,761.67x = 216,183.73 × 120,894.87
  4. Step 4: Simplify right side
    156,761.67x = 26,135,503,934.47
  5. Step 5: Solve for x
    x = 26,135,503,934.47/156,761.67
  6. Step 6: Final answer
    x = 166,721.27

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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.