Finding the Fourth Proportional to 120,076.68, 165,706.37 and 65,629.97
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Solution
The fourth proportional to 120,076.68, 165,706.37 and 65,629.97 is: 90,569.65
Step by Step Solution
- Step 1: Write the proportion equation
120,076.68 : 165,706.37 = 65,629.97 : x - Step 2: Convert to fraction form
120,076.68/165,706.37 = 65,629.97/x - Step 3: Cross multiply
120,076.68x = 165,706.37 × 65,629.97 - Step 4: Simplify right side
120,076.68x = 10,875,302,935.23 - Step 5: Solve for x
x = 10,875,302,935.23/120,076.68 - Step 6: Final answer
x = 90,569.65
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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.