Finding the Fourth Proportional to 133,198.11, 183,813.80 and 76,605.75
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Solution
The fourth proportional to 133,198.11, 183,813.80 and 76,605.75 is: 105,716.17
Step by Step Solution
- Step 1: Write the proportion equation
133,198.11 : 183,813.80 = 76,605.75 : x - Step 2: Convert to fraction form
133,198.11/183,813.80 = 76,605.75/x - Step 3: Cross multiply
133,198.11x = 183,813.80 × 76,605.75 - Step 4: Simplify right side
133,198.11x = 14,081,193,626.32 - Step 5: Solve for x
x = 14,081,193,626.32/133,198.11 - Step 6: Final answer
x = 105,716.17
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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.