Finding the Fourth Proportional to 129,680.08, 178,959.08 and 73,092.40
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Solution
The fourth proportional to 129,680.08, 178,959.08 and 73,092.40 is: 100,867.83
Step by Step Solution
- Step 1: Write the proportion equation
129,680.08 : 178,959.08 = 73,092.40 : x - Step 2: Convert to fraction form
129,680.08/178,959.08 = 73,092.40/x - Step 3: Cross multiply
129,680.08x = 178,959.08 × 73,092.40 - Step 4: Simplify right side
129,680.08x = 13,080,548,658.99 - Step 5: Solve for x
x = 13,080,548,658.99/129,680.08 - Step 6: Final answer
x = 100,867.83
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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.