Finding the Fourth Proportional to 121,918.23, 168,247.40 and 68,204.14
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Solution
The fourth proportional to 121,918.23, 168,247.40 and 68,204.14 is: 94,121.86
Step by Step Solution
- Step 1: Write the proportion equation
121,918.23 : 168,247.40 = 68,204.14 : x - Step 2: Convert to fraction form
121,918.23/168,247.40 = 68,204.14/x - Step 3: Cross multiply
121,918.23x = 168,247.40 × 68,204.14 - Step 4: Simplify right side
121,918.23x = 11,475,170,110.93 - Step 5: Solve for x
x = 11,475,170,110.93/121,918.23 - Step 6: Final answer
x = 94,121.86
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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.