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Finding the Fourth Proportional to 150,728.80, 208,027.26 and 90,301.96

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Solution

The fourth proportional to 150,728.80, 208,027.26 and 90,301.96 is: 124,629.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,728.80 : 208,027.26 = 90,301.96 : x
  2. Step 2: Convert to fraction form
    150,728.80/208,027.26 = 90,301.96/x
  3. Step 3: Cross multiply
    150,728.80x = 208,027.26 × 90,301.96
  4. Step 4: Simplify right side
    150,728.80x = 18,785,269,311.43
  5. Step 5: Solve for x
    x = 18,785,269,311.43/150,728.80
  6. Step 6: Final answer
    x = 124,629.60

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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.