Finding the Fourth Proportional to 145,207.80, 217,811.70 and 121,879.80
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Solution
The fourth proportional to 145,207.80, 217,811.70 and 121,879.80 is: 182,819.70
Step by Step Solution
- Step 1: Write the proportion equation
145,207.80 : 217,811.70 = 121,879.80 : x - Step 2: Convert to fraction form
145,207.80/217,811.70 = 121,879.80/x - Step 3: Cross multiply
145,207.80x = 217,811.70 × 121,879.80 - Step 4: Simplify right side
145,207.80x = 26,546,846,433.66 - Step 5: Solve for x
x = 26,546,846,433.66/145,207.80 - Step 6: Final answer
x = 182,819.70
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1.5x scale
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.