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Finding the Fourth Proportional to 100,108.92, 138,177.90 and 59,850.12

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Solution

The fourth proportional to 100,108.92, 138,177.90 and 59,850.12 is: 82,609.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,108.92 : 138,177.90 = 59,850.12 : x
  2. Step 2: Convert to fraction form
    100,108.92/138,177.90 = 59,850.12/x
  3. Step 3: Cross multiply
    100,108.92x = 138,177.90 × 59,850.12
  4. Step 4: Simplify right side
    100,108.92x = 8,269,963,896.35
  5. Step 5: Solve for x
    x = 8,269,963,896.35/100,108.92
  6. Step 6: Final answer
    x = 82,609.66

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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.