Finding the Fourth Proportional to 133,020,163.40, 199,530,245.10 and 87,633,206.60
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Solution
The fourth proportional to 133,020,163.40, 199,530,245.10 and 87,633,206.60 is: 131,449,809.90
Step by Step Solution
- Step 1: Write the proportion equation
133,020,163.40 : 199,530,245.10 = 87,633,206.60 : x - Step 2: Convert to fraction form
133,020,163.40/199,530,245.10 = 87,633,206.60/x - Step 3: Cross multiply
133,020,163.40x = 199,530,245.10 × 87,633,206.60 - Step 4: Simplify right side
133,020,163.40x = 17,485,475,191,796,936 - Step 5: Solve for x
x = 17,485,475,191,796,936/133,020,163.40 - Step 6: Final answer
x = 131,449,809.90
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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.