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Finding the Fourth Proportional to 172,481.83, 237,996.70 and 99,858.85

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Solution

The fourth proportional to 172,481.83, 237,996.70 and 99,858.85 is: 137,788.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,481.83 : 237,996.70 = 99,858.85 : x
  2. Step 2: Convert to fraction form
    172,481.83/237,996.70 = 99,858.85/x
  3. Step 3: Cross multiply
    172,481.83x = 237,996.70 × 99,858.85
  4. Step 4: Simplify right side
    172,481.83x = 23,766,075,921.16
  5. Step 5: Solve for x
    x = 23,766,075,921.16/172,481.83
  6. Step 6: Final answer
    x = 137,788.87

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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.