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Finding the Fourth Proportional to 172,128, 237,548.76 and 96,676.56

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Solution

The fourth proportional to 172,128, 237,548.76 and 96,676.56 is: 133,420.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,128 : 237,548.76 = 96,676.56 : x
  2. Step 2: Convert to fraction form
    172,128/237,548.76 = 96,676.56/x
  3. Step 3: Cross multiply
    172,128x = 237,548.76 × 96,676.56
  4. Step 4: Simplify right side
    172,128x = 22,965,396,949.07
  5. Step 5: Solve for x
    x = 22,965,396,949.07/172,128
  6. Step 6: Final answer
    x = 133,420.46

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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.