Finding the Fourth Proportional to 128,306,034.80, 192,081,138.60 and 120,831,743.60
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Solution
The fourth proportional to 128,306,034.80, 192,081,138.60 and 120,831,743.60 is: 180,891,716.64
Step by Step Solution
- Step 1: Write the proportion equation
128,306,034.80 : 192,081,138.60 = 120,831,743.60 : x - Step 2: Convert to fraction form
128,306,034.80/192,081,138.60 = 120,831,743.60/x - Step 3: Cross multiply
128,306,034.80x = 192,081,138.60 × 120,831,743.60 - Step 4: Simplify right side
128,306,034.80x = 23,209,498,889,711,260 - Step 5: Solve for x
x = 23,209,498,889,711,260/128,306,034.80 - Step 6: Final answer
x = 180,891,716.64
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.