Home / 345,788.56-518,682.92-109,149.68

Finding the Fourth Proportional to 345,788.56, 518,682.92 and 109,149.68

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Solution

The fourth proportional to 345,788.56, 518,682.92 and 109,149.68 is: 163,724.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,788.56 : 518,682.92 = 109,149.68 : x
  2. Step 2: Convert to fraction form
    345,788.56/518,682.92 = 109,149.68/x
  3. Step 3: Cross multiply
    345,788.56x = 518,682.92 × 109,149.68
  4. Step 4: Simplify right side
    345,788.56x = 56,614,074,739.47
  5. Step 5: Solve for x
    x = 56,614,074,739.47/345,788.56
  6. Step 6: Final answer
    x = 163,724.55

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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.