Finding the Fourth Proportional to 135,078.97, 202,554.84 and 78,935.31
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Solution
The fourth proportional to 135,078.97, 202,554.84 and 78,935.31 is: 118,365.79
Step by Step Solution
- Step 1: Write the proportion equation
135,078.97 : 202,554.84 = 78,935.31 : x - Step 2: Convert to fraction form
135,078.97/202,554.84 = 78,935.31/x - Step 3: Cross multiply
135,078.97x = 202,554.84 × 78,935.31 - Step 4: Simplify right side
135,078.97x = 15,988,729,087.40 - Step 5: Solve for x
x = 15,988,729,087.40/135,078.97 - Step 6: Final answer
x = 118,365.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.