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Finding the Fourth Proportional to 172,914.83, 259,394.94 and 67,720.13

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Solution

The fourth proportional to 172,914.83, 259,394.94 and 67,720.13 is: 101,589.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,914.83 : 259,394.94 = 67,720.13 : x
  2. Step 2: Convert to fraction form
    172,914.83/259,394.94 = 67,720.13/x
  3. Step 3: Cross multiply
    172,914.83x = 259,394.94 × 67,720.13
  4. Step 4: Simplify right side
    172,914.83x = 17,566,259,058.14
  5. Step 5: Solve for x
    x = 17,566,259,058.14/172,914.83
  6. Step 6: Final answer
    x = 101,589.08

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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.