Home / 208,089,043.80-312,039,087.30-78,653,635.80

Finding the Fourth Proportional to 208,089,043.80, 312,039,087.30 and 78,653,635.80

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Solution

The fourth proportional to 208,089,043.80, 312,039,087.30 and 78,653,635.80 is: 117,944,742.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,089,043.80 : 312,039,087.30 = 78,653,635.80 : x
  2. Step 2: Convert to fraction form
    208,089,043.80/312,039,087.30 = 78,653,635.80/x
  3. Step 3: Cross multiply
    208,089,043.80x = 312,039,087.30 × 78,653,635.80
  4. Step 4: Simplify right side
    208,089,043.80x = 24,543,008,727,858,604
  5. Step 5: Solve for x
    x = 24,543,008,727,858,604/208,089,043.80
  6. Step 6: Final answer
    x = 117,944,742.69

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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.