Finding the Fourth Proportional to 129,398.56, 193,786.80 and 73,826.08
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Solution
The fourth proportional to 129,398.56, 193,786.80 and 73,826.08 is: 110,561.66
Step by Step Solution
- Step 1: Write the proportion equation
129,398.56 : 193,786.80 = 73,826.08 : x - Step 2: Convert to fraction form
129,398.56/193,786.80 = 73,826.08/x - Step 3: Cross multiply
129,398.56x = 193,786.80 × 73,826.08 - Step 4: Simplify right side
129,398.56x = 14,306,519,799.74 - Step 5: Solve for x
x = 14,306,519,799.74/129,398.56 - Step 6: Final answer
x = 110,561.66
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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.