Finding the Fourth Proportional to 100,112,768.92, 138,084,248.46 and 91,879,371.64
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Solution
The fourth proportional to 100,112,768.92, 138,084,248.46 and 91,879,371.64 is: 126,728,029.99
Step by Step Solution
- Step 1: Write the proportion equation
100,112,768.92 : 138,084,248.46 = 91,879,371.64 : x - Step 2: Convert to fraction form
100,112,768.92/138,084,248.46 = 91,879,371.64/x - Step 3: Cross multiply
100,112,768.92x = 138,084,248.46 × 91,879,371.64 - Step 4: Simplify right side
100,112,768.92x = 12,687,093,981,886,438 - Step 5: Solve for x
x = 12,687,093,981,886,438/100,112,768.92 - Step 6: Final answer
x = 126,728,029.99
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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.