Home / 172,669.32-259,039.11-72,829.87

Finding the Fourth Proportional to 172,669.32, 259,039.11 and 72,829.87

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Solution

The fourth proportional to 172,669.32, 259,039.11 and 72,829.87 is: 109,259.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,669.32 : 259,039.11 = 72,829.87 : x
  2. Step 2: Convert to fraction form
    172,669.32/259,039.11 = 72,829.87/x
  3. Step 3: Cross multiply
    172,669.32x = 259,039.11 × 72,829.87
  4. Step 4: Simplify right side
    172,669.32x = 18,865,784,331.73
  5. Step 5: Solve for x
    x = 18,865,784,331.73/172,669.32
  6. Step 6: Final answer
    x = 109,259.62

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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.