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Finding the Fourth Proportional to 109,049.60, 150,478.08 and 63,738.20

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Solution

The fourth proportional to 109,049.60, 150,478.08 and 63,738.20 is: 87,952.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,049.60 : 150,478.08 = 63,738.20 : x
  2. Step 2: Convert to fraction form
    109,049.60/150,478.08 = 63,738.20/x
  3. Step 3: Cross multiply
    109,049.60x = 150,478.08 × 63,738.20
  4. Step 4: Simplify right side
    109,049.60x = 9,591,201,958.66
  5. Step 5: Solve for x
    x = 9,591,201,958.66/109,049.60
  6. Step 6: Final answer
    x = 87,952.66

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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.