Home / 206,420,964.48-309,557,670.72-68,220,993.60

Finding the Fourth Proportional to 206,420,964.48, 309,557,670.72 and 68,220,993.60

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Solution

The fourth proportional to 206,420,964.48, 309,557,670.72 and 68,220,993.60 is: 102,307,107.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,420,964.48 : 309,557,670.72 = 68,220,993.60 : x
  2. Step 2: Convert to fraction form
    206,420,964.48/309,557,670.72 = 68,220,993.60/x
  3. Step 3: Cross multiply
    206,420,964.48x = 309,557,670.72 × 68,220,993.60
  4. Step 4: Simplify right side
    206,420,964.48x = 21,118,331,873,020,028
  5. Step 5: Solve for x
    x = 21,118,331,873,020,028/206,420,964.48
  6. Step 6: Final answer
    x = 102,307,107.84

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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.