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Finding the Fourth Proportional to 172,379.19, 258,610.20 and 54,050.55

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Solution

The fourth proportional to 172,379.19, 258,610.20 and 54,050.55 is: 81,088.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,379.19 : 258,610.20 = 54,050.55 : x
  2. Step 2: Convert to fraction form
    172,379.19/258,610.20 = 54,050.55/x
  3. Step 3: Cross multiply
    172,379.19x = 258,610.20 × 54,050.55
  4. Step 4: Simplify right side
    172,379.19x = 13,978,023,545.61
  5. Step 5: Solve for x
    x = 13,978,023,545.61/172,379.19
  6. Step 6: Final answer
    x = 81,088.81

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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.