Finding the Fourth Proportional to 121,824.78, 168,133.64 and 68,112.97
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Solution
The fourth proportional to 121,824.78, 168,133.64 and 68,112.97 is: 94,004.53
Step by Step Solution
- Step 1: Write the proportion equation
121,824.78 : 168,133.64 = 68,112.97 : x - Step 2: Convert to fraction form
121,824.78/168,133.64 = 68,112.97/x - Step 3: Cross multiply
121,824.78x = 168,133.64 × 68,112.97 - Step 4: Simplify right side
121,824.78x = 11,452,081,577.31 - Step 5: Solve for x
x = 11,452,081,577.31/121,824.78 - Step 6: Final answer
x = 94,004.53
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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.