Home / 208,089,784.80-312,040,198.80-78,654,376.80

Finding the Fourth Proportional to 208,089,784.80, 312,040,198.80 and 78,654,376.80

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Solution

The fourth proportional to 208,089,784.80, 312,040,198.80 and 78,654,376.80 is: 117,945,853.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,089,784.80 : 312,040,198.80 = 78,654,376.80 : x
  2. Step 2: Convert to fraction form
    208,089,784.80/312,040,198.80 = 78,654,376.80/x
  3. Step 3: Cross multiply
    208,089,784.80x = 312,040,198.80 × 78,654,376.80
  4. Step 4: Simplify right side
    208,089,784.80x = 24,543,327,373,162,108
  5. Step 5: Solve for x
    x = 24,543,327,373,162,108/208,089,784.80
  6. Step 6: Final answer
    x = 117,945,853.98

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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.