Finding the Fourth Proportional to 122,393.30, 168,902.29 and 68,678.18
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Solution
The fourth proportional to 122,393.30, 168,902.29 and 68,678.18 is: 94,775.63
Step by Step Solution
- Step 1: Write the proportion equation
122,393.30 : 168,902.29 = 68,678.18 : x - Step 2: Convert to fraction form
122,393.30/168,902.29 = 68,678.18/x - Step 3: Cross multiply
122,393.30x = 168,902.29 × 68,678.18 - Step 4: Simplify right side
122,393.30x = 11,599,902,125.59 - Step 5: Solve for x
x = 11,599,902,125.59/122,393.30 - Step 6: Final answer
x = 94,775.63
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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.