Home / 212,724.66-319,099.97-68,645.10

Finding the Fourth Proportional to 212,724.66, 319,099.97 and 68,645.10

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Solution

The fourth proportional to 212,724.66, 319,099.97 and 68,645.10 is: 102,971.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,724.66 : 319,099.97 = 68,645.10 : x
  2. Step 2: Convert to fraction form
    212,724.66/319,099.97 = 68,645.10/x
  3. Step 3: Cross multiply
    212,724.66x = 319,099.97 × 68,645.10
  4. Step 4: Simplify right side
    212,724.66x = 21,904,649,350.65
  5. Step 5: Solve for x
    x = 21,904,649,350.65/212,724.66
  6. Step 6: Final answer
    x = 102,971.84

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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.