Finding the Fourth Proportional to 99,651,716.20, 149,365,599.90 and 51,110,813.80
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Solution
The fourth proportional to 99,651,716.20, 149,365,599.90 and 51,110,813.80 is: 76,608,789.65
Step by Step Solution
- Step 1: Write the proportion equation
99,651,716.20 : 149,365,599.90 = 51,110,813.80 : x - Step 2: Convert to fraction form
99,651,716.20/149,365,599.90 = 51,110,813.80/x - Step 3: Cross multiply
99,651,716.20x = 149,365,599.90 × 51,110,813.80 - Step 4: Simplify right side
99,651,716.20x = 7,634,197,364,614,198 - Step 5: Solve for x
x = 7,634,197,364,614,198/99,651,716.20 - Step 6: Final answer
x = 76,608,789.65
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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.