Finding the Fourth Proportional to 138,923,198.33, 208,403,960.15 and 80,658,315.99
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Solution
The fourth proportional to 138,923,198.33, 208,403,960.15 and 80,658,315.99 is: 120,998,599.76
Step by Step Solution
- Step 1: Write the proportion equation
138,923,198.33 : 208,403,960.15 = 80,658,315.99 : x - Step 2: Convert to fraction form
138,923,198.33/208,403,960.15 = 80,658,315.99/x - Step 3: Cross multiply
138,923,198.33x = 208,403,960.15 × 80,658,315.99 - Step 4: Simplify right side
138,923,198.33x = 16,809,512,472,329,230 - Step 5: Solve for x
x = 16,809,512,472,329,230/138,923,198.33 - Step 6: Final answer
x = 120,998,599.76
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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.