Home / 102,997.68-142,201.04-79,076.76

Finding the Fourth Proportional to 102,997.68, 142,201.04 and 79,076.76

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Solution

The fourth proportional to 102,997.68, 142,201.04 and 79,076.76 is: 109,175.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,997.68 : 142,201.04 = 79,076.76 : x
  2. Step 2: Convert to fraction form
    102,997.68/142,201.04 = 79,076.76/x
  3. Step 3: Cross multiply
    102,997.68x = 142,201.04 × 79,076.76
  4. Step 4: Simplify right side
    102,997.68x = 11,244,797,511.83
  5. Step 5: Solve for x
    x = 11,244,797,511.83/102,997.68
  6. Step 6: Final answer
    x = 109,175.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.