Finding the Fourth Proportional to 142,168,232.97, 213,260,616.32 and 39,940,242.21
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Solution
The fourth proportional to 142,168,232.97, 213,260,616.32 and 39,940,242.21 is: 59,912,685.78
Step by Step Solution
- Step 1: Write the proportion equation
142,168,232.97 : 213,260,616.32 = 39,940,242.21 : x - Step 2: Convert to fraction form
142,168,232.97/213,260,616.32 = 39,940,242.21/x - Step 3: Cross multiply
142,168,232.97x = 213,260,616.32 × 39,940,242.21 - Step 4: Simplify right side
142,168,232.97x = 8,517,680,669,474,978 - Step 5: Solve for x
x = 8,517,680,669,474,978/142,168,232.97 - Step 6: Final answer
x = 59,912,685.78
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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.