Home / 120,379,792.78-180,263,153.51-79,314,734.22

Finding the Fourth Proportional to 120,379,792.78, 180,263,153.51 and 79,314,734.22

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Solution

The fourth proportional to 120,379,792.78, 180,263,153.51 and 79,314,734.22 is: 118,770,133.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,379,792.78 : 180,263,153.51 = 79,314,734.22 : x
  2. Step 2: Convert to fraction form
    120,379,792.78/180,263,153.51 = 79,314,734.22/x
  3. Step 3: Cross multiply
    120,379,792.78x = 180,263,153.51 × 79,314,734.22
  4. Step 4: Simplify right side
    120,379,792.78x = 14,297,524,110,304,710
  5. Step 5: Solve for x
    x = 14,297,524,110,304,710/120,379,792.78
  6. Step 6: Final answer
    x = 118,770,133.92

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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.