Finding the Fourth Proportional to 157,863.84, 217,851.30 and 86,247.96
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Solution
The fourth proportional to 157,863.84, 217,851.30 and 86,247.96 is: 119,021.75
Step by Step Solution
- Step 1: Write the proportion equation
157,863.84 : 217,851.30 = 86,247.96 : x - Step 2: Convert to fraction form
157,863.84/217,851.30 = 86,247.96/x - Step 3: Cross multiply
157,863.84x = 217,851.30 × 86,247.96 - Step 4: Simplify right side
157,863.84x = 18,789,230,208.35 - Step 5: Solve for x
x = 18,789,230,208.35/157,863.84 - Step 6: Final answer
x = 119,021.75
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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.