Home / 212,723.66-319,098.47-68,644.10

Finding the Fourth Proportional to 212,723.66, 319,098.47 and 68,644.10

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Solution

The fourth proportional to 212,723.66, 319,098.47 and 68,644.10 is: 102,970.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,723.66 : 319,098.47 = 68,644.10 : x
  2. Step 2: Convert to fraction form
    212,723.66/319,098.47 = 68,644.10/x
  3. Step 3: Cross multiply
    212,723.66x = 319,098.47 × 68,644.10
  4. Step 4: Simplify right side
    212,723.66x = 21,904,227,284.53
  5. Step 5: Solve for x
    x = 21,904,227,284.53/212,723.66
  6. Step 6: Final answer
    x = 102,970.34

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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.