Finding the Fourth Proportional to 132,113.80, 198,170.70 and 84,874.60
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Solution
The fourth proportional to 132,113.80, 198,170.70 and 84,874.60 is: 127,311.90
Step by Step Solution
- Step 1: Write the proportion equation
132,113.80 : 198,170.70 = 84,874.60 : x - Step 2: Convert to fraction form
132,113.80/198,170.70 = 84,874.60/x - Step 3: Cross multiply
132,113.80x = 198,170.70 × 84,874.60 - Step 4: Simplify right side
132,113.80x = 16,819,658,894.22 - Step 5: Solve for x
x = 16,819,658,894.22/132,113.80 - Step 6: Final answer
x = 127,311.90
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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.