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Finding the Fourth Proportional to 237,070.87, 327,157.79 and 129,640.97

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Solution

The fourth proportional to 237,070.87, 327,157.79 and 129,640.97 is: 178,904.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,070.87 : 327,157.79 = 129,640.97 : x
  2. Step 2: Convert to fraction form
    237,070.87/327,157.79 = 129,640.97/x
  3. Step 3: Cross multiply
    237,070.87x = 327,157.79 × 129,640.97
  4. Step 4: Simplify right side
    237,070.87x = 42,413,053,408.35
  5. Step 5: Solve for x
    x = 42,413,053,408.35/237,070.87
  6. Step 6: Final answer
    x = 178,904.54

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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.