Home / 208,260.44-312,180.31-81,989.28

Finding the Fourth Proportional to 208,260.44, 312,180.31 and 81,989.28

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Solution

The fourth proportional to 208,260.44, 312,180.31 and 81,989.28 is: 122,901.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,260.44 : 312,180.31 = 81,989.28 : x
  2. Step 2: Convert to fraction form
    208,260.44/312,180.31 = 81,989.28/x
  3. Step 3: Cross multiply
    208,260.44x = 312,180.31 × 81,989.28
  4. Step 4: Simplify right side
    208,260.44x = 25,595,438,847.08
  5. Step 5: Solve for x
    x = 25,595,438,847.08/208,260.44
  6. Step 6: Final answer
    x = 122,901.11

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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.