Home / 79,239,912.40-118,859,868.60-72,437,467.60

Finding the Fourth Proportional to 79,239,912.40, 118,859,868.60 and 72,437,467.60

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Solution

The fourth proportional to 79,239,912.40, 118,859,868.60 and 72,437,467.60 is: 108,656,201.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,239,912.40 : 118,859,868.60 = 72,437,467.60 : x
  2. Step 2: Convert to fraction form
    79,239,912.40/118,859,868.60 = 72,437,467.60/x
  3. Step 3: Cross multiply
    79,239,912.40x = 118,859,868.60 × 72,437,467.60
  4. Step 4: Simplify right side
    79,239,912.40x = 8,609,907,880,652,756
  5. Step 5: Solve for x
    x = 8,609,907,880,652,756/79,239,912.40
  6. Step 6: Final answer
    x = 108,656,201.40

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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.