Home / 154,415.20-231,662.73-90,427.39

Finding the Fourth Proportional to 154,415.20, 231,662.73 and 90,427.39

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Solution

The fourth proportional to 154,415.20, 231,662.73 and 90,427.39 is: 135,664.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,415.20 : 231,662.73 = 90,427.39 : x
  2. Step 2: Convert to fraction form
    154,415.20/231,662.73 = 90,427.39/x
  3. Step 3: Cross multiply
    154,415.20x = 231,662.73 × 90,427.39
  4. Step 4: Simplify right side
    154,415.20x = 20,948,655,794.12
  5. Step 5: Solve for x
    x = 20,948,655,794.12/154,415.20
  6. Step 6: Final answer
    x = 135,664.47

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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.