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Finding the Fourth Proportional to 172,713.28, 259,104.84 and 72,873.68

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Solution

The fourth proportional to 172,713.28, 259,104.84 and 72,873.68 is: 109,325.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,713.28 : 259,104.84 = 72,873.68 : x
  2. Step 2: Convert to fraction form
    172,713.28/259,104.84 = 72,873.68/x
  3. Step 3: Cross multiply
    172,713.28x = 259,104.84 × 72,873.68
  4. Step 4: Simplify right side
    172,713.28x = 18,881,923,196.61
  5. Step 5: Solve for x
    x = 18,881,923,196.61/172,713.28
  6. Step 6: Final answer
    x = 109,325.25

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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.