Home / 131,782.20-197,214-107,812.68

Finding the Fourth Proportional to 131,782.20, 197,214 and 107,812.68

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Solution

The fourth proportional to 131,782.20, 197,214 and 107,812.68 is: 161,343.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,782.20 : 197,214 = 107,812.68 : x
  2. Step 2: Convert to fraction form
    131,782.20/197,214 = 107,812.68/x
  3. Step 3: Cross multiply
    131,782.20x = 197,214 × 107,812.68
  4. Step 4: Simplify right side
    131,782.20x = 21,262,169,873.52
  5. Step 5: Solve for x
    x = 21,262,169,873.52/131,782.20
  6. Step 6: Final answer
    x = 161,343.26

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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.