Home / 206,507,109.36-309,669,765.12-109,440,074.88

Finding the Fourth Proportional to 206,507,109.36, 309,669,765.12 and 109,440,074.88

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Solution

The fourth proportional to 206,507,109.36, 309,669,765.12 and 109,440,074.88 is: 164,111,939.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,507,109.36 : 309,669,765.12 = 109,440,074.88 : x
  2. Step 2: Convert to fraction form
    206,507,109.36/309,669,765.12 = 109,440,074.88/x
  3. Step 3: Cross multiply
    206,507,109.36x = 309,669,765.12 × 109,440,074.88
  4. Step 4: Simplify right side
    206,507,109.36x = 33,890,282,282,804,812
  5. Step 5: Solve for x
    x = 33,890,282,282,804,812/206,507,109.36
  6. Step 6: Final answer
    x = 164,111,939.72

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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.