Home / 103,788.20-155,682.44-28,908.56

Finding the Fourth Proportional to 103,788.20, 155,682.44 and 28,908.56

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Solution

The fourth proportional to 103,788.20, 155,682.44 and 28,908.56 is: 43,362.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,788.20 : 155,682.44 = 28,908.56 : x
  2. Step 2: Convert to fraction form
    103,788.20/155,682.44 = 28,908.56/x
  3. Step 3: Cross multiply
    103,788.20x = 155,682.44 × 28,908.56
  4. Step 4: Simplify right side
    103,788.20x = 4,500,555,157.69
  5. Step 5: Solve for x
    x = 4,500,555,157.69/103,788.20
  6. Step 6: Final answer
    x = 43,362.88

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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.