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Finding the Fourth Proportional to 157,575.94, 217,456.19 and 85,956.28

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Solution

The fourth proportional to 157,575.94, 217,456.19 and 85,956.28 is: 118,620.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,575.94 : 217,456.19 = 85,956.28 : x
  2. Step 2: Convert to fraction form
    157,575.94/217,456.19 = 85,956.28/x
  3. Step 3: Cross multiply
    157,575.94x = 217,456.19 × 85,956.28
  4. Step 4: Simplify right side
    157,575.94x = 18,691,725,155.37
  5. Step 5: Solve for x
    x = 18,691,725,155.37/157,575.94
  6. Step 6: Final answer
    x = 118,620.43

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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.