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Finding the Fourth Proportional to 100,608.60, 150,912.90 and 89,722.20

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Solution

The fourth proportional to 100,608.60, 150,912.90 and 89,722.20 is: 134,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,608.60 : 150,912.90 = 89,722.20 : x
  2. Step 2: Convert to fraction form
    100,608.60/150,912.90 = 89,722.20/x
  3. Step 3: Cross multiply
    100,608.60x = 150,912.90 × 89,722.20
  4. Step 4: Simplify right side
    100,608.60x = 13,540,237,396.38
  5. Step 5: Solve for x
    x = 13,540,237,396.38/100,608.60
  6. Step 6: Final answer
    x = 134,583.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.