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Finding the Fourth Proportional to 156,874.56, 217,056.90 and 136,773.31

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Solution

The fourth proportional to 156,874.56, 217,056.90 and 136,773.31 is: 189,244.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,874.56 : 217,056.90 = 136,773.31 : x
  2. Step 2: Convert to fraction form
    156,874.56/217,056.90 = 136,773.31/x
  3. Step 3: Cross multiply
    156,874.56x = 217,056.90 × 136,773.31
  4. Step 4: Simplify right side
    156,874.56x = 29,687,590,671.34
  5. Step 5: Solve for x
    x = 29,687,590,671.34/156,874.56
  6. Step 6: Final answer
    x = 189,244.13

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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.