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Finding the Fourth Proportional to 172,468.25, 258,744.03 and 54,139.59

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Solution

The fourth proportional to 172,468.25, 258,744.03 and 54,139.59 is: 81,222.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,468.25 : 258,744.03 = 54,139.59 : x
  2. Step 2: Convert to fraction form
    172,468.25/258,744.03 = 54,139.59/x
  3. Step 3: Cross multiply
    172,468.25x = 258,744.03 × 54,139.59
  4. Step 4: Simplify right side
    172,468.25x = 14,008,295,496.12
  5. Step 5: Solve for x
    x = 14,008,295,496.12/172,468.25
  6. Step 6: Final answer
    x = 81,222.46

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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.