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Finding the Fourth Proportional to 168,641.84, 252,509.44 and 128,469.44

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Solution

The fourth proportional to 168,641.84, 252,509.44 and 128,469.44 is: 192,358.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,641.84 : 252,509.44 = 128,469.44 : x
  2. Step 2: Convert to fraction form
    168,641.84/252,509.44 = 128,469.44/x
  3. Step 3: Cross multiply
    168,641.84x = 252,509.44 × 128,469.44
  4. Step 4: Simplify right side
    168,641.84x = 32,439,746,351.51
  5. Step 5: Solve for x
    x = 32,439,746,351.51/168,641.84
  6. Step 6: Final answer
    x = 192,358.83

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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.