Finding the Fourth Proportional to 158,717.26, 219,021.09 and 87,091.63
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Solution
The fourth proportional to 158,717.26, 219,021.09 and 87,091.63 is: 120,181.66
Step by Step Solution
- Step 1: Write the proportion equation
158,717.26 : 219,021.09 = 87,091.63 : x - Step 2: Convert to fraction form
158,717.26/219,021.09 = 87,091.63/x - Step 3: Cross multiply
158,717.26x = 219,021.09 × 87,091.63 - Step 4: Simplify right side
158,717.26x = 19,074,903,732.48 - Step 5: Solve for x
x = 19,074,903,732.48/158,717.26 - Step 6: Final answer
x = 120,181.66
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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.