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Finding the Fourth Proportional to 109,048.75, 150,489.71 and 66,630.67

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Solution

The fourth proportional to 109,048.75, 150,489.71 and 66,630.67 is: 91,951.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,048.75 : 150,489.71 = 66,630.67 : x
  2. Step 2: Convert to fraction form
    109,048.75/150,489.71 = 66,630.67/x
  3. Step 3: Cross multiply
    109,048.75x = 150,489.71 × 66,630.67
  4. Step 4: Simplify right side
    109,048.75x = 10,027,230,205.41
  5. Step 5: Solve for x
    x = 10,027,230,205.41/109,048.75
  6. Step 6: Final answer
    x = 91,951.81

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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.