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Finding the Fourth Proportional to 172,889.98, 259,272.56 and 73,057.88

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Solution

The fourth proportional to 172,889.98, 259,272.56 and 73,057.88 is: 109,560.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,889.98 : 259,272.56 = 73,057.88 : x
  2. Step 2: Convert to fraction form
    172,889.98/259,272.56 = 73,057.88/x
  3. Step 3: Cross multiply
    172,889.98x = 259,272.56 × 73,057.88
  4. Step 4: Simplify right side
    172,889.98x = 18,941,904,406.60
  5. Step 5: Solve for x
    x = 18,941,904,406.60/172,889.98
  6. Step 6: Final answer
    x = 109,560.45

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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.