Finding the Fourth Proportional to 137,771.09, 190,152.09 and 79,630.31
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Solution
The fourth proportional to 137,771.09, 190,152.09 and 79,630.31 is: 109,906.00
Step by Step Solution
- Step 1: Write the proportion equation
137,771.09 : 190,152.09 = 79,630.31 : x - Step 2: Convert to fraction form
137,771.09/190,152.09 = 79,630.31/x - Step 3: Cross multiply
137,771.09x = 190,152.09 × 79,630.31 - Step 4: Simplify right side
137,771.09x = 15,141,868,923.09 - Step 5: Solve for x
x = 15,141,868,923.09/137,771.09 - Step 6: Final answer
x = 109,906.00
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1.5x scale
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.