Home / 90,992,942.10-136,489,413.15-68,318,126.10

Finding the Fourth Proportional to 90,992,942.10, 136,489,413.15 and 68,318,126.10

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Solution

The fourth proportional to 90,992,942.10, 136,489,413.15 and 68,318,126.10 is: 102,477,189.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,992,942.10 : 136,489,413.15 = 68,318,126.10 : x
  2. Step 2: Convert to fraction form
    90,992,942.10/136,489,413.15 = 68,318,126.10/x
  3. Step 3: Cross multiply
    90,992,942.10x = 136,489,413.15 × 68,318,126.10
  4. Step 4: Simplify right side
    90,992,942.10x = 9,324,700,938,896,698
  5. Step 5: Solve for x
    x = 9,324,700,938,896,698/90,992,942.10
  6. Step 6: Final answer
    x = 102,477,189.15

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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.