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Finding the Fourth Proportional to 172,862, 259,293 and 56,126

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Solution

The fourth proportional to 172,862, 259,293 and 56,126 is: 84,189

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,862 : 259,293 = 56,126 : x
  2. Step 2: Convert to fraction form
    172,862/259,293 = 56,126/x
  3. Step 3: Cross multiply
    172,862x = 259,293 × 56,126
  4. Step 4: Simplify right side
    172,862x = 14,553,078,918
  5. Step 5: Solve for x
    x = 14,553,078,918/172,862
  6. Step 6: Final answer
    x = 84,189

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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.