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Finding the Fourth Proportional to 172,327, 258,509.04 and 72,497.36

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Solution

The fourth proportional to 172,327, 258,509.04 and 72,497.36 is: 108,753.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,327 : 258,509.04 = 72,497.36 : x
  2. Step 2: Convert to fraction form
    172,327/258,509.04 = 72,497.36/x
  3. Step 3: Cross multiply
    172,327x = 258,509.04 × 72,497.36
  4. Step 4: Simplify right side
    172,327x = 18,741,222,936.13
  5. Step 5: Solve for x
    x = 18,741,222,936.13/172,327
  6. Step 6: Final answer
    x = 108,753.84

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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.