Finding the Fourth Proportional to 221,114.92, 305,138.70 and 125,621.80
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Solution
The fourth proportional to 221,114.92, 305,138.70 and 125,621.80 is: 173,358.15
Step by Step Solution
- Step 1: Write the proportion equation
221,114.92 : 305,138.70 = 125,621.80 : x - Step 2: Convert to fraction form
221,114.92/305,138.70 = 125,621.80/x - Step 3: Cross multiply
221,114.92x = 305,138.70 × 125,621.80 - Step 4: Simplify right side
221,114.92x = 38,332,072,743.66 - Step 5: Solve for x
x = 38,332,072,743.66/221,114.92 - Step 6: Final answer
x = 173,358.15
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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.