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Finding the Fourth Proportional to 172,917.17, 259,402.59 and 73,077.80

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Solution

The fourth proportional to 172,917.17, 259,402.59 and 73,077.80 is: 109,628.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,917.17 : 259,402.59 = 73,077.80 : x
  2. Step 2: Convert to fraction form
    172,917.17/259,402.59 = 73,077.80/x
  3. Step 3: Cross multiply
    172,917.17x = 259,402.59 × 73,077.80
  4. Step 4: Simplify right side
    172,917.17x = 18,956,570,591.50
  5. Step 5: Solve for x
    x = 18,956,570,591.50/172,917.17
  6. Step 6: Final answer
    x = 109,628.04

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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.