Finding the Fourth Proportional to 128,969,257,184.82, 177,978,112,490.13 and 71,096,365,620.99
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Solution
The fourth proportional to 128,969,257,184.82, 177,978,112,490.13 and 71,096,365,620.99 is: 98,113,280,903.83
Step by Step Solution
- Step 1: Write the proportion equation
128,969,257,184.82 : 177,978,112,490.13 = 71,096,365,620.99 : x - Step 2: Convert to fraction form
128,969,257,184.82/177,978,112,490.13 = 71,096,365,620.99/x - Step 3: Cross multiply
128,969,257,184.82x = 177,978,112,490.13 × 71,096,365,620.99 - Step 4: Simplify right side
128,969,257,184.82x = 12,653,596,958,131,971,162,112 - Step 5: Solve for x
x = 12,653,596,958,131,971,162,112/128,969,257,184.82 - Step 6: Final answer
x = 98,113,280,903.83
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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.