Finding the Fourth Proportional to 129,781.80, 194,240.70 and 94,141.80
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Solution
The fourth proportional to 129,781.80, 194,240.70 and 94,141.80 is: 140,899.33
Step by Step Solution
- Step 1: Write the proportion equation
129,781.80 : 194,240.70 = 94,141.80 : x - Step 2: Convert to fraction form
129,781.80/194,240.70 = 94,141.80/x - Step 3: Cross multiply
129,781.80x = 194,240.70 × 94,141.80 - Step 4: Simplify right side
129,781.80x = 18,286,169,131.26 - Step 5: Solve for x
x = 18,286,169,131.26/129,781.80 - Step 6: Final answer
x = 140,899.33
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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.