Home / 102,742.20-154,091.70-43,579.80

Finding the Fourth Proportional to 102,742.20, 154,091.70 and 43,579.80

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Solution

The fourth proportional to 102,742.20, 154,091.70 and 43,579.80 is: 65,360.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,742.20 : 154,091.70 = 43,579.80 : x
  2. Step 2: Convert to fraction form
    102,742.20/154,091.70 = 43,579.80/x
  3. Step 3: Cross multiply
    102,742.20x = 154,091.70 × 43,579.80
  4. Step 4: Simplify right side
    102,742.20x = 6,715,285,467.66
  5. Step 5: Solve for x
    x = 6,715,285,467.66/102,742.20
  6. Step 6: Final answer
    x = 65,360.54

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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.