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Finding the Fourth Proportional to 150,855.16, 208,165.80 and 90,414.60

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Solution

The fourth proportional to 150,855.16, 208,165.80 and 90,414.60 is: 124,763.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,855.16 : 208,165.80 = 90,414.60 : x
  2. Step 2: Convert to fraction form
    150,855.16/208,165.80 = 90,414.60/x
  3. Step 3: Cross multiply
    150,855.16x = 208,165.80 × 90,414.60
  4. Step 4: Simplify right side
    150,855.16x = 18,821,227,540.68
  5. Step 5: Solve for x
    x = 18,821,227,540.68/150,855.16
  6. Step 6: Final answer
    x = 124,763.56

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1.5x scale

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.