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Finding the Fourth Proportional to 100,090.64, 150,131.64 and 40,906.64

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Solution

The fourth proportional to 100,090.64, 150,131.64 and 40,906.64 is: 61,358.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,090.64 : 150,131.64 = 40,906.64 : x
  2. Step 2: Convert to fraction form
    100,090.64/150,131.64 = 40,906.64/x
  3. Step 3: Cross multiply
    100,090.64x = 150,131.64 × 40,906.64
  4. Step 4: Simplify right side
    100,090.64x = 6,141,380,950.09
  5. Step 5: Solve for x
    x = 6,141,380,950.09/100,090.64
  6. Step 6: Final answer
    x = 61,358.19

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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.