Finding the Fourth Proportional to 194,481.20, 291,138.60 and 115,554.80
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Solution
The fourth proportional to 194,481.20, 291,138.60 and 115,554.80 is: 172,985.68
Step by Step Solution
- Step 1: Write the proportion equation
194,481.20 : 291,138.60 = 115,554.80 : x - Step 2: Convert to fraction form
194,481.20/291,138.60 = 115,554.80/x - Step 3: Cross multiply
194,481.20x = 291,138.60 × 115,554.80 - Step 4: Simplify right side
194,481.20x = 33,642,462,695.28 - Step 5: Solve for x
x = 33,642,462,695.28/194,481.20 - Step 6: Final answer
x = 172,985.68
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1.5x scale
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.