Finding the Fourth Proportional to 125,391.84, 173,040.72 and 71,678.02
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Solution
The fourth proportional to 125,391.84, 173,040.72 and 71,678.02 is: 98,915.65
Step by Step Solution
- Step 1: Write the proportion equation
125,391.84 : 173,040.72 = 71,678.02 : x - Step 2: Convert to fraction form
125,391.84/173,040.72 = 71,678.02/x - Step 3: Cross multiply
125,391.84x = 173,040.72 × 71,678.02 - Step 4: Simplify right side
125,391.84x = 12,403,215,323.77 - Step 5: Solve for x
x = 12,403,215,323.77/125,391.84 - Step 6: Final answer
x = 98,915.65
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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.