Home / 205,907,986.18-308,827,891.80-67,735,319.08

Finding the Fourth Proportional to 205,907,986.18, 308,827,891.80 and 67,735,319.08

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Solution

The fourth proportional to 205,907,986.18, 308,827,891.80 and 67,735,319.08 is: 101,591,765.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,907,986.18 : 308,827,891.80 = 67,735,319.08 : x
  2. Step 2: Convert to fraction form
    205,907,986.18/308,827,891.80 = 67,735,319.08/x
  3. Step 3: Cross multiply
    205,907,986.18x = 308,827,891.80 × 67,735,319.08
  4. Step 4: Simplify right side
    205,907,986.18x = 20,918,555,792,362,772
  5. Step 5: Solve for x
    x = 20,918,555,792,362,772/205,907,986.18
  6. Step 6: Final answer
    x = 101,591,765.24

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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.