Home / 208,305.42-312,474.33-68,078.22

Finding the Fourth Proportional to 208,305.42, 312,474.33 and 68,078.22

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Solution

The fourth proportional to 208,305.42, 312,474.33 and 68,078.22 is: 102,122.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,305.42 : 312,474.33 = 68,078.22 : x
  2. Step 2: Convert to fraction form
    208,305.42/312,474.33 = 68,078.22/x
  3. Step 3: Cross multiply
    208,305.42x = 312,474.33 × 68,078.22
  4. Step 4: Simplify right side
    208,305.42x = 21,272,696,182.09
  5. Step 5: Solve for x
    x = 21,272,696,182.09/208,305.42
  6. Step 6: Final answer
    x = 102,122.62

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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.