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Finding the Fourth Proportional to 172,923.86, 259,412.61 and 73,084.47

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Solution

The fourth proportional to 172,923.86, 259,412.61 and 73,084.47 is: 109,638.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,923.86 : 259,412.61 = 73,084.47 : x
  2. Step 2: Convert to fraction form
    172,923.86/259,412.61 = 73,084.47/x
  3. Step 3: Cross multiply
    172,923.86x = 259,412.61 × 73,084.47
  4. Step 4: Simplify right side
    172,923.86x = 18,959,033,578.99
  5. Step 5: Solve for x
    x = 18,959,033,578.99/172,923.86
  6. Step 6: Final answer
    x = 109,638.04

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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.