Finding the Fourth Proportional to 129,292.96, 194,028.72 and 84,940.96
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Solution
The fourth proportional to 129,292.96, 194,028.72 and 84,940.96 is: 127,470.09
Step by Step Solution
- Step 1: Write the proportion equation
129,292.96 : 194,028.72 = 84,940.96 : x - Step 2: Convert to fraction form
129,292.96/194,028.72 = 84,940.96/x - Step 3: Cross multiply
129,292.96x = 194,028.72 × 84,940.96 - Step 4: Simplify right side
129,292.96x = 16,480,985,744.37 - Step 5: Solve for x
x = 16,480,985,744.37/129,292.96 - Step 6: Final answer
x = 127,470.09
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1.5x scale
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.