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Finding the Fourth Proportional to 109,138.68, 150,609.15 and 63,843.48

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Solution

The fourth proportional to 109,138.68, 150,609.15 and 63,843.48 is: 88,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,138.68 : 150,609.15 = 63,843.48 : x
  2. Step 2: Convert to fraction form
    109,138.68/150,609.15 = 63,843.48/x
  3. Step 3: Cross multiply
    109,138.68x = 150,609.15 × 63,843.48
  4. Step 4: Simplify right side
    109,138.68x = 9,615,412,255.84
  5. Step 5: Solve for x
    x = 9,615,412,255.84/109,138.68
  6. Step 6: Final answer
    x = 88,102.70

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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.