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Finding the Fourth Proportional to 172,977.99, 259,502 and 73,138.02

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Solution

The fourth proportional to 172,977.99, 259,502 and 73,138.02 is: 109,721.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,977.99 : 259,502 = 73,138.02 : x
  2. Step 2: Convert to fraction form
    172,977.99/259,502 = 73,138.02/x
  3. Step 3: Cross multiply
    172,977.99x = 259,502 × 73,138.02
  4. Step 4: Simplify right side
    172,977.99x = 18,979,461,168.53
  5. Step 5: Solve for x
    x = 18,979,461,168.53/172,977.99
  6. Step 6: Final answer
    x = 109,721.83

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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.