Finding the Fourth Proportional to 144,073,428.76, 198,821,289.57 and 77,993,877.99
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Solution
The fourth proportional to 144,073,428.76, 198,821,289.57 and 77,993,877.99 is: 107,631,528.83
Step by Step Solution
- Step 1: Write the proportion equation
144,073,428.76 : 198,821,289.57 = 77,993,877.99 : x - Step 2: Convert to fraction form
144,073,428.76/198,821,289.57 = 77,993,877.99/x - Step 3: Cross multiply
144,073,428.76x = 198,821,289.57 × 77,993,877.99 - Step 4: Simplify right side
144,073,428.76x = 15,506,843,400,147,068 - Step 5: Solve for x
x = 15,506,843,400,147,068/144,073,428.76 - Step 6: Final answer
x = 107,631,528.83
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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.