Finding the Fourth Proportional to 221,695.12, 305,939.04 and 121,093.12
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Solution
The fourth proportional to 221,695.12, 305,939.04 and 121,093.12 is: 167,108.38
Step by Step Solution
- Step 1: Write the proportion equation
221,695.12 : 305,939.04 = 121,093.12 : x - Step 2: Convert to fraction form
221,695.12/305,939.04 = 121,093.12/x - Step 3: Cross multiply
221,695.12x = 305,939.04 × 121,093.12 - Step 4: Simplify right side
221,695.12x = 37,047,112,883.40 - Step 5: Solve for x
x = 37,047,112,883.40/221,695.12 - Step 6: Final answer
x = 167,108.38
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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.