Home / 154,120,519.38-212,717,215.17-91,431,413.67

Finding the Fourth Proportional to 154,120,519.38, 212,717,215.17 and 91,431,413.67

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Solution

The fourth proportional to 154,120,519.38, 212,717,215.17 and 91,431,413.67 is: 126,193,681.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,120,519.38 : 212,717,215.17 = 91,431,413.67 : x
  2. Step 2: Convert to fraction form
    154,120,519.38/212,717,215.17 = 91,431,413.67/x
  3. Step 3: Cross multiply
    154,120,519.38x = 212,717,215.17 × 91,431,413.67
  4. Step 4: Simplify right side
    154,120,519.38x = 19,449,035,694,938,668
  5. Step 5: Solve for x
    x = 19,449,035,694,938,668/154,120,519.38
  6. Step 6: Final answer
    x = 126,193,681.24

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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.