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Finding the Fourth Proportional to 172,928.80, 259,469.44 and 73,157.84

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Solution

The fourth proportional to 172,928.80, 259,469.44 and 73,157.84 is: 109,769.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,928.80 : 259,469.44 = 73,157.84 : x
  2. Step 2: Convert to fraction form
    172,928.80/259,469.44 = 73,157.84/x
  3. Step 3: Cross multiply
    172,928.80x = 259,469.44 × 73,157.84
  4. Step 4: Simplify right side
    172,928.80x = 18,982,223,776.41
  5. Step 5: Solve for x
    x = 18,982,223,776.41/172,928.80
  6. Step 6: Final answer
    x = 109,769.01

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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.