Finding the Fourth Proportional to 129,974.08, 179,376.30 and 78,975.08
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Solution
The fourth proportional to 129,974.08, 179,376.30 and 78,975.08 is: 108,992.94
Step by Step Solution
- Step 1: Write the proportion equation
129,974.08 : 179,376.30 = 78,975.08 : x - Step 2: Convert to fraction form
129,974.08/179,376.30 = 78,975.08/x - Step 3: Cross multiply
129,974.08x = 179,376.30 × 78,975.08 - Step 4: Simplify right side
129,974.08x = 14,166,257,642.60 - Step 5: Solve for x
x = 14,166,257,642.60/129,974.08 - Step 6: Final answer
x = 108,992.94
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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.