Home / 208,026,864.80-312,040,297.20-105,990,192.80

Finding the Fourth Proportional to 208,026,864.80, 312,040,297.20 and 105,990,192.80

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Solution

The fourth proportional to 208,026,864.80, 312,040,297.20 and 105,990,192.80 is: 158,985,289.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,026,864.80 : 312,040,297.20 = 105,990,192.80 : x
  2. Step 2: Convert to fraction form
    208,026,864.80/312,040,297.20 = 105,990,192.80/x
  3. Step 3: Cross multiply
    208,026,864.80x = 312,040,297.20 × 105,990,192.80
  4. Step 4: Simplify right side
    208,026,864.80x = 33,073,211,261,597,296
  5. Step 5: Solve for x
    x = 33,073,211,261,597,296/208,026,864.80
  6. Step 6: Final answer
    x = 158,985,289.20

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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.