Finding the Fourth Proportional to 189,703.08, 261,912.32 and 121,749.35
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Solution
The fourth proportional to 189,703.08, 261,912.32 and 121,749.35 is: 168,092.44
Step by Step Solution
- Step 1: Write the proportion equation
189,703.08 : 261,912.32 = 121,749.35 : x - Step 2: Convert to fraction form
189,703.08/261,912.32 = 121,749.35/x - Step 3: Cross multiply
189,703.08x = 261,912.32 × 121,749.35 - Step 4: Simplify right side
189,703.08x = 31,887,653,255.24 - Step 5: Solve for x
x = 31,887,653,255.24/189,703.08 - Step 6: Final answer
x = 168,092.44
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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.