Home / 207,938.03-311,907.06-81,637.83

Finding the Fourth Proportional to 207,938.03, 311,907.06 and 81,637.83

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Solution

The fourth proportional to 207,938.03, 311,907.06 and 81,637.83 is: 122,456.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,938.03 : 311,907.06 = 81,637.83 : x
  2. Step 2: Convert to fraction form
    207,938.03/311,907.06 = 81,637.83/x
  3. Step 3: Cross multiply
    207,938.03x = 311,907.06 × 81,637.83
  4. Step 4: Simplify right side
    207,938.03x = 25,463,415,540.08
  5. Step 5: Solve for x
    x = 25,463,415,540.08/207,938.03
  6. Step 6: Final answer
    x = 122,456.75

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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.