Home / 154,120,420.62-212,717,078.73-91,431,315.04

Finding the Fourth Proportional to 154,120,420.62, 212,717,078.73 and 91,431,315.04

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Solution

The fourth proportional to 154,120,420.62, 212,717,078.73 and 91,431,315.04 is: 126,193,545.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,120,420.62 : 212,717,078.73 = 91,431,315.04 : x
  2. Step 2: Convert to fraction form
    154,120,420.62/212,717,078.73 = 91,431,315.04/x
  3. Step 3: Cross multiply
    154,120,420.62x = 212,717,078.73 × 91,431,315.04
  4. Step 4: Simplify right side
    154,120,420.62x = 19,449,002,239,751,112
  5. Step 5: Solve for x
    x = 19,449,002,239,751,112/154,120,420.62
  6. Step 6: Final answer
    x = 126,193,545.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.