Finding the Fourth Proportional to 178,678.14, 268,016.94 and 139,264.80
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Solution
The fourth proportional to 178,678.14, 268,016.94 and 139,264.80 is: 208,896.99
Step by Step Solution
- Step 1: Write the proportion equation
178,678.14 : 268,016.94 = 139,264.80 : x - Step 2: Convert to fraction form
178,678.14/268,016.94 = 139,264.80/x - Step 3: Cross multiply
178,678.14x = 268,016.94 × 139,264.80 - Step 4: Simplify right side
178,678.14x = 37,325,325,545.71 - Step 5: Solve for x
x = 37,325,325,545.71/178,678.14 - Step 6: Final answer
x = 208,896.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.