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Finding the Fourth Proportional to 172,964.93, 259,422.29 and 66,375.72

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Solution

The fourth proportional to 172,964.93, 259,422.29 and 66,375.72 is: 99,553.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,964.93 : 259,422.29 = 66,375.72 : x
  2. Step 2: Convert to fraction form
    172,964.93/259,422.29 = 66,375.72/x
  3. Step 3: Cross multiply
    172,964.93x = 259,422.29 × 66,375.72
  4. Step 4: Simplify right side
    172,964.93x = 17,219,339,985.69
  5. Step 5: Solve for x
    x = 17,219,339,985.69/172,964.93
  6. Step 6: Final answer
    x = 99,553.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.