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Finding the Fourth Proportional to 168,011.68, 251,930 and 79,241.34

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Solution

The fourth proportional to 168,011.68, 251,930 and 79,241.34 is: 118,820.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,011.68 : 251,930 = 79,241.34 : x
  2. Step 2: Convert to fraction form
    168,011.68/251,930 = 79,241.34/x
  3. Step 3: Cross multiply
    168,011.68x = 251,930 × 79,241.34
  4. Step 4: Simplify right side
    168,011.68x = 19,963,270,786.20
  5. Step 5: Solve for x
    x = 19,963,270,786.20/168,011.68
  6. Step 6: Final answer
    x = 118,820.73

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1.5x scale

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.