Home / 208,188,905.20-312,283,357.80-78,800,736.40

Finding the Fourth Proportional to 208,188,905.20, 312,283,357.80 and 78,800,736.40

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Solution

The fourth proportional to 208,188,905.20, 312,283,357.80 and 78,800,736.40 is: 118,201,104.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,188,905.20 : 312,283,357.80 = 78,800,736.40 : x
  2. Step 2: Convert to fraction form
    208,188,905.20/312,283,357.80 = 78,800,736.40/x
  3. Step 3: Cross multiply
    208,188,905.20x = 312,283,357.80 × 78,800,736.40
  4. Step 4: Simplify right side
    208,188,905.20x = 24,608,158,560,104,688
  5. Step 5: Solve for x
    x = 24,608,158,560,104,688/208,188,905.20
  6. Step 6: Final answer
    x = 118,201,104.60

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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.