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Finding the Fourth Proportional to 172,918.67, 259,404.84 and 73,079.30

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Solution

The fourth proportional to 172,918.67, 259,404.84 and 73,079.30 is: 109,630.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,918.67 : 259,404.84 = 73,079.30 : x
  2. Step 2: Convert to fraction form
    172,918.67/259,404.84 = 73,079.30/x
  3. Step 3: Cross multiply
    172,918.67x = 259,404.84 × 73,079.30
  4. Step 4: Simplify right side
    172,918.67x = 18,957,124,123.81
  5. Step 5: Solve for x
    x = 18,957,124,123.81/172,918.67
  6. Step 6: Final answer
    x = 109,630.29

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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.