Finding the Fourth Proportional to 112,178.40, 154,809.11 and 61,191.99
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Solution
The fourth proportional to 112,178.40, 154,809.11 and 61,191.99 is: 84,446.54
Step by Step Solution
- Step 1: Write the proportion equation
112,178.40 : 154,809.11 = 61,191.99 : x - Step 2: Convert to fraction form
112,178.40/154,809.11 = 61,191.99/x - Step 3: Cross multiply
112,178.40x = 154,809.11 × 61,191.99 - Step 4: Simplify right side
112,178.40x = 9,473,077,511.03 - Step 5: Solve for x
x = 9,473,077,511.03/112,178.40 - Step 6: Final answer
x = 84,446.54
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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.