Finding the Fourth Proportional to 131,279.68, 181,163.64 and 74,689.84
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Solution
The fourth proportional to 131,279.68, 181,163.64 and 74,689.84 is: 103,070.66
Step by Step Solution
- Step 1: Write the proportion equation
131,279.68 : 181,163.64 = 74,689.84 : x - Step 2: Convert to fraction form
131,279.68/181,163.64 = 74,689.84/x - Step 3: Cross multiply
131,279.68x = 181,163.64 × 74,689.84 - Step 4: Simplify right side
131,279.68x = 13,531,083,285.42 - Step 5: Solve for x
x = 13,531,083,285.42/131,279.68 - Step 6: Final answer
x = 103,070.66
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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.