Home / 212,829.78-319,443.97-107,722.56

Finding the Fourth Proportional to 212,829.78, 319,443.97 and 107,722.56

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Solution

The fourth proportional to 212,829.78, 319,443.97 and 107,722.56 is: 161,684.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,829.78 : 319,443.97 = 107,722.56 : x
  2. Step 2: Convert to fraction form
    212,829.78/319,443.97 = 107,722.56/x
  3. Step 3: Cross multiply
    212,829.78x = 319,443.97 × 107,722.56
  4. Step 4: Simplify right side
    212,829.78x = 34,411,322,224.96
  5. Step 5: Solve for x
    x = 34,411,322,224.96/212,829.78
  6. Step 6: Final answer
    x = 161,684.71

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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.