Finding the Fourth Proportional to 91,679.10, 136,891.44 and 82,129.80
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Solution
The fourth proportional to 91,679.10, 136,891.44 and 82,129.80 is: 122,632.82
Step by Step Solution
- Step 1: Write the proportion equation
91,679.10 : 136,891.44 = 82,129.80 : x - Step 2: Convert to fraction form
91,679.10/136,891.44 = 82,129.80/x - Step 3: Cross multiply
91,679.10x = 136,891.44 × 82,129.80 - Step 4: Simplify right side
91,679.10x = 11,242,866,588.91 - Step 5: Solve for x
x = 11,242,866,588.91/91,679.10 - Step 6: Final answer
x = 122,632.82
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.