Home / 146,769.40-220,161.30-76,785.40

Finding the Fourth Proportional to 146,769.40, 220,161.30 and 76,785.40

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Solution

The fourth proportional to 146,769.40, 220,161.30 and 76,785.40 is: 115,181.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,769.40 : 220,161.30 = 76,785.40 : x
  2. Step 2: Convert to fraction form
    146,769.40/220,161.30 = 76,785.40/x
  3. Step 3: Cross multiply
    146,769.40x = 220,161.30 × 76,785.40
  4. Step 4: Simplify right side
    146,769.40x = 16,905,173,485.02
  5. Step 5: Solve for x
    x = 16,905,173,485.02/146,769.40
  6. Step 6: Final answer
    x = 115,181.87

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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.