Finding the Fourth Proportional to 138,207.84, 207,180.36 and 54,021.96
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Solution
The fourth proportional to 138,207.84, 207,180.36 and 54,021.96 is: 80,981.58
Step by Step Solution
- Step 1: Write the proportion equation
138,207.84 : 207,180.36 = 54,021.96 : x - Step 2: Convert to fraction form
138,207.84/207,180.36 = 54,021.96/x - Step 3: Cross multiply
138,207.84x = 207,180.36 × 54,021.96 - Step 4: Simplify right side
138,207.84x = 11,192,289,120.71 - Step 5: Solve for x
x = 11,192,289,120.71/138,207.84 - Step 6: Final answer
x = 80,981.58
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.