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Finding the Fourth Proportional to 172,713.26, 259,079.13 and 54,393.81

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Solution

The fourth proportional to 172,713.26, 259,079.13 and 54,393.81 is: 81,593.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,713.26 : 259,079.13 = 54,393.81 : x
  2. Step 2: Convert to fraction form
    172,713.26/259,079.13 = 54,393.81/x
  3. Step 3: Cross multiply
    172,713.26x = 259,079.13 × 54,393.81
  4. Step 4: Simplify right side
    172,713.26x = 14,092,300,972.19
  5. Step 5: Solve for x
    x = 14,092,300,972.19/172,713.26
  6. Step 6: Final answer
    x = 81,593.63

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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.