Home / 156,974.09-217,194.71-136,872.86

Finding the Fourth Proportional to 156,974.09, 217,194.71 and 136,872.86

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Solution

The fourth proportional to 156,974.09, 217,194.71 and 136,872.86 is: 189,381.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,974.09 : 217,194.71 = 136,872.86 : x
  2. Step 2: Convert to fraction form
    156,974.09/217,194.71 = 136,872.86/x
  3. Step 3: Cross multiply
    156,974.09x = 217,194.71 × 136,872.86
  4. Step 4: Simplify right side
    156,974.09x = 29,728,059,364.23
  5. Step 5: Solve for x
    x = 29,728,059,364.23/156,974.09
  6. Step 6: Final answer
    x = 189,381.96

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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.