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Finding the Fourth Proportional to 100,236.56, 150,353.01 and 40,278.74

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Solution

The fourth proportional to 100,236.56, 150,353.01 and 40,278.74 is: 60,417.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,236.56 : 150,353.01 = 40,278.74 : x
  2. Step 2: Convert to fraction form
    100,236.56/150,353.01 = 40,278.74/x
  3. Step 3: Cross multiply
    100,236.56x = 150,353.01 × 40,278.74
  4. Step 4: Simplify right side
    100,236.56x = 6,056,029,046.24
  5. Step 5: Solve for x
    x = 6,056,029,046.24/100,236.56
  6. Step 6: Final answer
    x = 60,417.37

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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.