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Finding the Fourth Proportional to 157,785.36, 217,771.92 and 93,251.94

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Solution

The fourth proportional to 157,785.36, 217,771.92 and 93,251.94 is: 128,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,785.36 : 217,771.92 = 93,251.94 : x
  2. Step 2: Convert to fraction form
    157,785.36/217,771.92 = 93,251.94/x
  3. Step 3: Cross multiply
    157,785.36x = 217,771.92 × 93,251.94
  4. Step 4: Simplify right side
    157,785.36x = 20,307,654,017.52
  5. Step 5: Solve for x
    x = 20,307,654,017.52/157,785.36
  6. Step 6: Final answer
    x = 128,704.30

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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.