Finding the Fourth Proportional to 147,981,138.42, 204,214,407.93 and 81,906,225.96
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Solution
The fourth proportional to 147,981,138.42, 204,214,407.93 and 81,906,225.96 is: 113,030,833.65
Step by Step Solution
- Step 1: Write the proportion equation
147,981,138.42 : 204,214,407.93 = 81,906,225.96 : x - Step 2: Convert to fraction form
147,981,138.42/204,214,407.93 = 81,906,225.96/x - Step 3: Cross multiply
147,981,138.42x = 204,214,407.93 × 81,906,225.96 - Step 4: Simplify right side
147,981,138.42x = 16,726,431,440,202,196 - Step 5: Solve for x
x = 16,726,431,440,202,196/147,981,138.42 - Step 6: Final answer
x = 113,030,833.65
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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.