Finding the Fourth Proportional to 132,731.82, 183,170.16 and 79,018.70
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Solution
The fourth proportional to 132,731.82, 183,170.16 and 79,018.70 is: 109,045.95
Step by Step Solution
- Step 1: Write the proportion equation
132,731.82 : 183,170.16 = 79,018.70 : x - Step 2: Convert to fraction form
132,731.82/183,170.16 = 79,018.70/x - Step 3: Cross multiply
132,731.82x = 183,170.16 × 79,018.70 - Step 4: Simplify right side
132,731.82x = 14,473,867,006.14 - Step 5: Solve for x
x = 14,473,867,006.14/132,731.82 - Step 6: Final answer
x = 109,045.95
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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.