Home / 208,089,816.30-312,040,246.05-78,654,408.30

Finding the Fourth Proportional to 208,089,816.30, 312,040,246.05 and 78,654,408.30

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Solution

The fourth proportional to 208,089,816.30, 312,040,246.05 and 78,654,408.30 is: 117,945,901.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,089,816.30 : 312,040,246.05 = 78,654,408.30 : x
  2. Step 2: Convert to fraction form
    208,089,816.30/312,040,246.05 = 78,654,408.30/x
  3. Step 3: Cross multiply
    208,089,816.30x = 312,040,246.05 × 78,654,408.30
  4. Step 4: Simplify right side
    208,089,816.30x = 24,543,340,918,849,164
  5. Step 5: Solve for x
    x = 24,543,340,918,849,164/208,089,816.30
  6. Step 6: Final answer
    x = 117,945,901.22

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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.