Home / 100,958.25-151,481.10-54,156.45

Finding the Fourth Proportional to 100,958.25, 151,481.10 and 54,156.45

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Solution

The fourth proportional to 100,958.25, 151,481.10 and 54,156.45 is: 81,258.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,958.25 : 151,481.10 = 54,156.45 : x
  2. Step 2: Convert to fraction form
    100,958.25/151,481.10 = 54,156.45/x
  3. Step 3: Cross multiply
    100,958.25x = 151,481.10 × 54,156.45
  4. Step 4: Simplify right side
    100,958.25x = 8,203,678,618.10
  5. Step 5: Solve for x
    x = 8,203,678,618.10/100,958.25
  6. Step 6: Final answer
    x = 81,258.13

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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.