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Finding the Fourth Proportional to 100,082.66, 150,039.21 and 43,880.18

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Solution

The fourth proportional to 100,082.66, 150,039.21 and 43,880.18 is: 65,783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,082.66 : 150,039.21 = 43,880.18 : x
  2. Step 2: Convert to fraction form
    100,082.66/150,039.21 = 43,880.18/x
  3. Step 3: Cross multiply
    100,082.66x = 150,039.21 × 43,880.18
  4. Step 4: Simplify right side
    100,082.66x = 6,583,747,676.77
  5. Step 5: Solve for x
    x = 6,583,747,676.77/100,082.66
  6. Step 6: Final answer
    x = 65,783.10

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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.