Finding the Fourth Proportional to 154,853,821.99, 213,703,912.63 and 84,286,021.14
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Solution
The fourth proportional to 154,853,821.99, 213,703,912.63 and 84,286,021.14 is: 116,317,778.05
Step by Step Solution
- Step 1: Write the proportion equation
154,853,821.99 : 213,703,912.63 = 84,286,021.14 : x - Step 2: Convert to fraction form
154,853,821.99/213,703,912.63 = 84,286,021.14/x - Step 3: Cross multiply
154,853,821.99x = 213,703,912.63 × 84,286,021.14 - Step 4: Simplify right side
154,853,821.99x = 18,012,252,497,373,946 - Step 5: Solve for x
x = 18,012,252,497,373,946/154,853,821.99 - Step 6: Final answer
x = 116,317,778.05
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.