Finding the Fourth Proportional to 155,680.81, 214,764.94 and 149,645.29
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Solution
The fourth proportional to 155,680.81, 214,764.94 and 149,645.29 is: 206,438.81
Step by Step Solution
- Step 1: Write the proportion equation
155,680.81 : 214,764.94 = 149,645.29 : x - Step 2: Convert to fraction form
155,680.81/214,764.94 = 149,645.29/x - Step 3: Cross multiply
155,680.81x = 214,764.94 × 149,645.29 - Step 4: Simplify right side
155,680.81x = 32,138,561,728.13 - Step 5: Solve for x
x = 32,138,561,728.13/155,680.81 - Step 6: Final answer
x = 206,438.81
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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.