Home / 78,738,511.20-118,107,766.80-74,274,406.80

Finding the Fourth Proportional to 78,738,511.20, 118,107,766.80 and 74,274,406.80

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Solution

The fourth proportional to 78,738,511.20, 118,107,766.80 and 74,274,406.80 is: 111,411,610.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,738,511.20 : 118,107,766.80 = 74,274,406.80 : x
  2. Step 2: Convert to fraction form
    78,738,511.20/118,107,766.80 = 74,274,406.80/x
  3. Step 3: Cross multiply
    78,738,511.20x = 118,107,766.80 × 74,274,406.80
  4. Step 4: Simplify right side
    78,738,511.20x = 8,772,384,317,542,734
  5. Step 5: Solve for x
    x = 8,772,384,317,542,734/78,738,511.20
  6. Step 6: Final answer
    x = 111,411,610.20

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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.