Finding the Fourth Proportional to 186,869.09, 257,789.64 and 122,309.91
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Solution
The fourth proportional to 186,869.09, 257,789.64 and 122,309.91 is: 168,728.96
Step by Step Solution
- Step 1: Write the proportion equation
186,869.09 : 257,789.64 = 122,309.91 : x - Step 2: Convert to fraction form
186,869.09/257,789.64 = 122,309.91/x - Step 3: Cross multiply
186,869.09x = 257,789.64 × 122,309.91 - Step 4: Simplify right side
186,869.09x = 31,530,226,378.38 - Step 5: Solve for x
x = 31,530,226,378.38/186,869.09 - Step 6: Final answer
x = 168,728.96
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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.