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Finding the Fourth Proportional to 172,278.03, 258,349.37 and 72,486.03

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Solution

The fourth proportional to 172,278.03, 258,349.37 and 72,486.03 is: 108,700.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,278.03 : 258,349.37 = 72,486.03 : x
  2. Step 2: Convert to fraction form
    172,278.03/258,349.37 = 72,486.03/x
  3. Step 3: Cross multiply
    172,278.03x = 258,349.37 × 72,486.03
  4. Step 4: Simplify right side
    172,278.03x = 18,726,719,821.87
  5. Step 5: Solve for x
    x = 18,726,719,821.87/172,278.03
  6. Step 6: Final answer
    x = 108,700.57

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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.