Finding the Fourth Proportional to 120,990,163.20, 181,485,244.80 and 120,990,163.20
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Solution
The fourth proportional to 120,990,163.20, 181,485,244.80 and 120,990,163.20 is: 181,485,244.80
Step by Step Solution
- Step 1: Write the proportion equation
120,990,163.20 : 181,485,244.80 = 120,990,163.20 : x - Step 2: Convert to fraction form
120,990,163.20/181,485,244.80 = 120,990,163.20/x - Step 3: Cross multiply
120,990,163.20x = 181,485,244.80 × 120,990,163.20 - Step 4: Simplify right side
120,990,163.20x = 21,957,929,386,743,952 - Step 5: Solve for x
x = 21,957,929,386,743,952/120,990,163.20 - Step 6: Final answer
x = 181,485,244.80
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1.5x scale
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.