Home / 208,014,911.80-312,022,367.70-105,978,239.80

Finding the Fourth Proportional to 208,014,911.80, 312,022,367.70 and 105,978,239.80

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Solution

The fourth proportional to 208,014,911.80, 312,022,367.70 and 105,978,239.80 is: 158,967,359.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,014,911.80 : 312,022,367.70 = 105,978,239.80 : x
  2. Step 2: Convert to fraction form
    208,014,911.80/312,022,367.70 = 105,978,239.80/x
  3. Step 3: Cross multiply
    208,014,911.80x = 312,022,367.70 × 105,978,239.80
  4. Step 4: Simplify right side
    208,014,911.80x = 33,067,581,307,074,372
  5. Step 5: Solve for x
    x = 33,067,581,307,074,372/208,014,911.80
  6. Step 6: Final answer
    x = 158,967,359.70

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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.