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Finding the Fourth Proportional to 172,857.48, 259,113.96 and 73,042.80

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Solution

The fourth proportional to 172,857.48, 259,113.96 and 73,042.80 is: 109,491.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,857.48 : 259,113.96 = 73,042.80 : x
  2. Step 2: Convert to fraction form
    172,857.48/259,113.96 = 73,042.80/x
  3. Step 3: Cross multiply
    172,857.48x = 259,113.96 × 73,042.80
  4. Step 4: Simplify right side
    172,857.48x = 18,926,409,157.49
  5. Step 5: Solve for x
    x = 18,926,409,157.49/172,857.48
  6. Step 6: Final answer
    x = 109,491.41

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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.