Finding the Fourth Proportional to 121,471.80, 182,207.70 and 38,365.80
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Solution
The fourth proportional to 121,471.80, 182,207.70 and 38,365.80 is: 57,548.70
Step by Step Solution
- Step 1: Write the proportion equation
121,471.80 : 182,207.70 = 38,365.80 : x - Step 2: Convert to fraction form
121,471.80/182,207.70 = 38,365.80/x - Step 3: Cross multiply
121,471.80x = 182,207.70 × 38,365.80 - Step 4: Simplify right side
121,471.80x = 6,990,544,176.66 - Step 5: Solve for x
x = 6,990,544,176.66/121,471.80 - Step 6: Final answer
x = 57,548.70
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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.