Finding the Fourth Proportional to 221,707.64, 305,956.94 and 121,105.64
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Solution
The fourth proportional to 221,707.64, 305,956.94 and 121,105.64 is: 167,125.99
Step by Step Solution
- Step 1: Write the proportion equation
221,707.64 : 305,956.94 = 121,105.64 : x - Step 2: Convert to fraction form
221,707.64/305,956.94 = 121,105.64/x - Step 3: Cross multiply
221,707.64x = 305,956.94 × 121,105.64 - Step 4: Simplify right side
221,707.64x = 37,053,108,895.83 - Step 5: Solve for x
x = 37,053,108,895.83/221,707.64 - Step 6: Final answer
x = 167,125.99
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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.