Finding the Fourth Proportional to 129,903,503.56, 194,884,338.79 and 43,639,557.57
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Solution
The fourth proportional to 129,903,503.56, 194,884,338.79 and 43,639,557.57 is: 65,469,106.60
Step by Step Solution
- Step 1: Write the proportion equation
129,903,503.56 : 194,884,338.79 = 43,639,557.57 : x - Step 2: Convert to fraction form
129,903,503.56/194,884,338.79 = 43,639,557.57/x - Step 3: Cross multiply
129,903,503.56x = 194,884,338.79 × 43,639,557.57 - Step 4: Simplify right side
129,903,503.56x = 8,504,666,322,172,138 - Step 5: Solve for x
x = 8,504,666,322,172,138/129,903,503.56 - Step 6: Final answer
x = 65,469,106.60
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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.