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Finding the Fourth Proportional to 156,363.66, 215,781.12 and 84,743.73

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Solution

The fourth proportional to 156,363.66, 215,781.12 and 84,743.73 is: 116,945.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,363.66 : 215,781.12 = 84,743.73 : x
  2. Step 2: Convert to fraction form
    156,363.66/215,781.12 = 84,743.73/x
  3. Step 3: Cross multiply
    156,363.66x = 215,781.12 × 84,743.73
  4. Step 4: Simplify right side
    156,363.66x = 18,286,096,972.38
  5. Step 5: Solve for x
    x = 18,286,096,972.38/156,363.66
  6. Step 6: Final answer
    x = 116,945.95

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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.