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Finding the Fourth Proportional to 172,919.64, 259,403.72 and 60,574.12

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Solution

The fourth proportional to 172,919.64, 259,403.72 and 60,574.12 is: 90,869.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,919.64 : 259,403.72 = 60,574.12 : x
  2. Step 2: Convert to fraction form
    172,919.64/259,403.72 = 60,574.12/x
  3. Step 3: Cross multiply
    172,919.64x = 259,403.72 × 60,574.12
  4. Step 4: Simplify right side
    172,919.64x = 15,713,151,760.86
  5. Step 5: Solve for x
    x = 15,713,151,760.86/172,919.64
  6. Step 6: Final answer
    x = 90,869.68

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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.