Finding the Fourth Proportional to 129,276,643.20, 193,914,964.80 and 129,276,643.20
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Solution
The fourth proportional to 129,276,643.20, 193,914,964.80 and 129,276,643.20 is: 193,914,964.80
Step by Step Solution
- Step 1: Write the proportion equation
129,276,643.20 : 193,914,964.80 = 129,276,643.20 : x - Step 2: Convert to fraction form
129,276,643.20/193,914,964.80 = 129,276,643.20/x - Step 3: Cross multiply
129,276,643.20x = 193,914,964.80 × 129,276,643.20 - Step 4: Simplify right side
129,276,643.20x = 25,068,675,715,590,160 - Step 5: Solve for x
x = 25,068,675,715,590,160/129,276,643.20 - Step 6: Final answer
x = 193,914,964.80
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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.