Finding the Fourth Proportional to 186,902.88, 257,836.16 and 122,343.65
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Solution
The fourth proportional to 186,902.88, 257,836.16 and 122,343.65 is: 168,775.45
Step by Step Solution
- Step 1: Write the proportion equation
186,902.88 : 257,836.16 = 122,343.65 : x - Step 2: Convert to fraction form
186,902.88/257,836.16 = 122,343.65/x - Step 3: Cross multiply
186,902.88x = 257,836.16 × 122,343.65 - Step 4: Simplify right side
186,902.88x = 31,544,616,916.38 - Step 5: Solve for x
x = 31,544,616,916.38/186,902.88 - Step 6: Final answer
x = 168,775.45
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1.5x scale
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.