Home / 102,771.72-154,195.38-73,420.56

Finding the Fourth Proportional to 102,771.72, 154,195.38 and 73,420.56

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Solution

The fourth proportional to 102,771.72, 154,195.38 and 73,420.56 is: 110,157.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,771.72 : 154,195.38 = 73,420.56 : x
  2. Step 2: Convert to fraction form
    102,771.72/154,195.38 = 73,420.56/x
  3. Step 3: Cross multiply
    102,771.72x = 154,195.38 × 73,420.56
  4. Step 4: Simplify right side
    102,771.72x = 11,321,111,149.01
  5. Step 5: Solve for x
    x = 11,321,111,149.01/102,771.72
  6. Step 6: Final answer
    x = 110,157.84

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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.