Home / 139,968,115.20-209,952,172.80-71,093,361.60

Finding the Fourth Proportional to 139,968,115.20, 209,952,172.80 and 71,093,361.60

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Solution

The fourth proportional to 139,968,115.20, 209,952,172.80 and 71,093,361.60 is: 106,640,042.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,115.20 : 209,952,172.80 = 71,093,361.60 : x
  2. Step 2: Convert to fraction form
    139,968,115.20/209,952,172.80 = 71,093,361.60/x
  3. Step 3: Cross multiply
    139,968,115.20x = 209,952,172.80 × 71,093,361.60
  4. Step 4: Simplify right side
    139,968,115.20x = 14,926,205,739,576,084
  5. Step 5: Solve for x
    x = 14,926,205,739,576,084/139,968,115.20
  6. Step 6: Final answer
    x = 106,640,042.40

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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.