Finding the Fourth Proportional to 136,939.80, 205,409.70 and 63,211.80
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Solution
The fourth proportional to 136,939.80, 205,409.70 and 63,211.80 is: 94,817.70
Step by Step Solution
- Step 1: Write the proportion equation
136,939.80 : 205,409.70 = 63,211.80 : x - Step 2: Convert to fraction form
136,939.80/205,409.70 = 63,211.80/x - Step 3: Cross multiply
136,939.80x = 205,409.70 × 63,211.80 - Step 4: Simplify right side
136,939.80x = 12,984,316,874.46 - Step 5: Solve for x
x = 12,984,316,874.46/136,939.80 - Step 6: Final answer
x = 94,817.70
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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.