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Finding the Fourth Proportional to 172,273.86, 258,390.29 and 45,923.58

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Solution

The fourth proportional to 172,273.86, 258,390.29 and 45,923.58 is: 68,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,273.86 : 258,390.29 = 45,923.58 : x
  2. Step 2: Convert to fraction form
    172,273.86/258,390.29 = 45,923.58/x
  3. Step 3: Cross multiply
    172,273.86x = 258,390.29 × 45,923.58
  4. Step 4: Simplify right side
    172,273.86x = 11,866,206,924.42
  5. Step 5: Solve for x
    x = 11,866,206,924.42/172,273.86
  6. Step 6: Final answer
    x = 68,879.90

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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.