Finding the Fourth Proportional to 128,196,029.10, 192,289,378.05 and 51,498,230.70
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Solution
The fourth proportional to 128,196,029.10, 192,289,378.05 and 51,498,230.70 is: 77,245,471.81
Step by Step Solution
- Step 1: Write the proportion equation
128,196,029.10 : 192,289,378.05 = 51,498,230.70 : x - Step 2: Convert to fraction form
128,196,029.10/192,289,378.05 = 51,498,230.70/x - Step 3: Cross multiply
128,196,029.10x = 192,289,378.05 × 51,498,230.70 - Step 4: Simplify right side
128,196,029.10x = 9,902,562,751,978,418 - Step 5: Solve for x
x = 9,902,562,751,978,418/128,196,029.10 - Step 6: Final answer
x = 77,245,471.81
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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.