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Finding the Fourth Proportional to 172,321.99, 258,483.08 and 54,002.59

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Solution

The fourth proportional to 172,321.99, 258,483.08 and 54,002.59 is: 81,003.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,321.99 : 258,483.08 = 54,002.59 : x
  2. Step 2: Convert to fraction form
    172,321.99/258,483.08 = 54,002.59/x
  3. Step 3: Cross multiply
    172,321.99x = 258,483.08 × 54,002.59
  4. Step 4: Simplify right side
    172,321.99x = 13,958,755,791.18
  5. Step 5: Solve for x
    x = 13,958,755,791.18/172,321.99
  6. Step 6: Final answer
    x = 81,003.91

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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.