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Finding the Fourth Proportional to 100,137.96, 138,181.01 and 59,843.70

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Solution

The fourth proportional to 100,137.96, 138,181.01 and 59,843.70 is: 82,578.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,137.96 : 138,181.01 = 59,843.70 : x
  2. Step 2: Convert to fraction form
    100,137.96/138,181.01 = 59,843.70/x
  3. Step 3: Cross multiply
    100,137.96x = 138,181.01 × 59,843.70
  4. Step 4: Simplify right side
    100,137.96x = 8,269,262,608.92
  5. Step 5: Solve for x
    x = 8,269,262,608.92/100,137.96
  6. Step 6: Final answer
    x = 82,578.70

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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.