Home / 143,855.64-198,546.66-90,187.20

Finding the Fourth Proportional to 143,855.64, 198,546.66 and 90,187.20

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Solution

The fourth proportional to 143,855.64, 198,546.66 and 90,187.20 is: 124,474.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,855.64 : 198,546.66 = 90,187.20 : x
  2. Step 2: Convert to fraction form
    143,855.64/198,546.66 = 90,187.20/x
  3. Step 3: Cross multiply
    143,855.64x = 198,546.66 × 90,187.20
  4. Step 4: Simplify right side
    143,855.64x = 17,906,367,334.75
  5. Step 5: Solve for x
    x = 17,906,367,334.75/143,855.64
  6. Step 6: Final answer
    x = 124,474.56

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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.