Home / 154,415.30-231,662.90-90,427.48

Finding the Fourth Proportional to 154,415.30, 231,662.90 and 90,427.48

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Solution

The fourth proportional to 154,415.30, 231,662.90 and 90,427.48 is: 135,664.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,415.30 : 231,662.90 = 90,427.48 : x
  2. Step 2: Convert to fraction form
    154,415.30/231,662.90 = 90,427.48/x
  3. Step 3: Cross multiply
    154,415.30x = 231,662.90 × 90,427.48
  4. Step 4: Simplify right side
    154,415.30x = 20,948,692,256.49
  5. Step 5: Solve for x
    x = 20,948,692,256.49/154,415.30
  6. Step 6: Final answer
    x = 135,664.62

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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.