Finding the Fourth Proportional to 157,922.26, 217,935.58 and 86,305.30
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Solution
The fourth proportional to 157,922.26, 217,935.58 and 86,305.30 is: 119,102.88
Step by Step Solution
- Step 1: Write the proportion equation
157,922.26 : 217,935.58 = 86,305.30 : x - Step 2: Convert to fraction form
157,922.26/217,935.58 = 86,305.30/x - Step 3: Cross multiply
157,922.26x = 217,935.58 × 86,305.30 - Step 4: Simplify right side
157,922.26x = 18,808,995,612.57 - Step 5: Solve for x
x = 18,808,995,612.57/157,922.26 - Step 6: Final answer
x = 119,102.88
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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.