Finding the Fourth Proportional to 122,477,405.20, 183,716,107.80 and 84,213,653.20
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Solution
The fourth proportional to 122,477,405.20, 183,716,107.80 and 84,213,653.20 is: 126,320,479.80
Step by Step Solution
- Step 1: Write the proportion equation
122,477,405.20 : 183,716,107.80 = 84,213,653.20 : x - Step 2: Convert to fraction form
122,477,405.20/183,716,107.80 = 84,213,653.20/x - Step 3: Cross multiply
122,477,405.20x = 183,716,107.80 × 84,213,653.20 - Step 4: Simplify right side
122,477,405.20x = 15,471,404,589,523,016 - Step 5: Solve for x
x = 15,471,404,589,523,016/122,477,405.20 - Step 6: Final answer
x = 126,320,479.80
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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.