Home / 207,918.12-311,844.78-67,675.80

Finding the Fourth Proportional to 207,918.12, 311,844.78 and 67,675.80

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Solution

The fourth proportional to 207,918.12, 311,844.78 and 67,675.80 is: 101,503.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,918.12 : 311,844.78 = 67,675.80 : x
  2. Step 2: Convert to fraction form
    207,918.12/311,844.78 = 67,675.80/x
  3. Step 3: Cross multiply
    207,918.12x = 311,844.78 × 67,675.80
  4. Step 4: Simplify right side
    207,918.12x = 21,104,344,962.32
  5. Step 5: Solve for x
    x = 21,104,344,962.32/207,918.12
  6. Step 6: Final answer
    x = 101,503.15

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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.