Finding the Fourth Proportional to 155,782.09, 214,979.39 and 84,162.07
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Solution
The fourth proportional to 155,782.09, 214,979.39 and 84,162.07 is: 116,143.71
Step by Step Solution
- Step 1: Write the proportion equation
155,782.09 : 214,979.39 = 84,162.07 : x - Step 2: Convert to fraction form
155,782.09/214,979.39 = 84,162.07/x - Step 3: Cross multiply
155,782.09x = 214,979.39 × 84,162.07 - Step 4: Simplify right side
155,782.09x = 18,093,110,469.74 - Step 5: Solve for x
x = 18,093,110,469.74/155,782.09 - Step 6: Final answer
x = 116,143.71
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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.