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Finding the Fourth Proportional to 172,881.26, 259,321.94 and 54,561.86

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Solution

The fourth proportional to 172,881.26, 259,321.94 and 54,561.86 is: 81,842.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,881.26 : 259,321.94 = 54,561.86 : x
  2. Step 2: Convert to fraction form
    172,881.26/259,321.94 = 54,561.86/x
  3. Step 3: Cross multiply
    172,881.26x = 259,321.94 × 54,561.86
  4. Step 4: Simplify right side
    172,881.26x = 14,149,087,385.21
  5. Step 5: Solve for x
    x = 14,149,087,385.21/172,881.26
  6. Step 6: Final answer
    x = 81,842.81

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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.