Finding the Fourth Proportional to 143,013.18, 197,362.64 and 79,356.90
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Solution
The fourth proportional to 143,013.18, 197,362.64 and 79,356.90 is: 109,514.99
Step by Step Solution
- Step 1: Write the proportion equation
143,013.18 : 197,362.64 = 79,356.90 : x - Step 2: Convert to fraction form
143,013.18/197,362.64 = 79,356.90/x - Step 3: Cross multiply
143,013.18x = 197,362.64 × 79,356.90 - Step 4: Simplify right side
143,013.18x = 15,662,087,286.22 - Step 5: Solve for x
x = 15,662,087,286.22/143,013.18 - Step 6: Final answer
x = 109,514.99
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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.