Home / 212,719.19-319,137.98-92,786.63

Finding the Fourth Proportional to 212,719.19, 319,137.98 and 92,786.63

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Solution

The fourth proportional to 212,719.19, 319,137.98 and 92,786.63 is: 139,205.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,719.19 : 319,137.98 = 92,786.63 : x
  2. Step 2: Convert to fraction form
    212,719.19/319,137.98 = 92,786.63/x
  3. Step 3: Cross multiply
    212,719.19x = 319,137.98 × 92,786.63
  4. Step 4: Simplify right side
    212,719.19x = 29,611,735,609.58
  5. Step 5: Solve for x
    x = 29,611,735,609.58/212,719.19
  6. Step 6: Final answer
    x = 139,205.76

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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.