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Finding the Fourth Proportional to 172,765.86, 259,185.71 and 60,449.75

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Solution

The fourth proportional to 172,765.86, 259,185.71 and 60,449.75 is: 90,687.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,765.86 : 259,185.71 = 60,449.75 : x
  2. Step 2: Convert to fraction form
    172,765.86/259,185.71 = 60,449.75/x
  3. Step 3: Cross multiply
    172,765.86x = 259,185.71 × 60,449.75
  4. Step 4: Simplify right side
    172,765.86x = 15,667,711,373.07
  5. Step 5: Solve for x
    x = 15,667,711,373.07/172,765.86
  6. Step 6: Final answer
    x = 90,687.54

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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.