Home / 212,653.50-319,039.37-92,720.94

Finding the Fourth Proportional to 212,653.50, 319,039.37 and 92,720.94

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Solution

The fourth proportional to 212,653.50, 319,039.37 and 92,720.94 is: 139,107.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,653.50 : 319,039.37 = 92,720.94 : x
  2. Step 2: Convert to fraction form
    212,653.50/319,039.37 = 92,720.94/x
  3. Step 3: Cross multiply
    212,653.50x = 319,039.37 × 92,720.94
  4. Step 4: Simplify right side
    212,653.50x = 29,581,629,819.80
  5. Step 5: Solve for x
    x = 29,581,629,819.80/212,653.50
  6. Step 6: Final answer
    x = 139,107.19

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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.