Finding the Fourth Proportional to 128,766.30, 193,149.45 and 121,508.70
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Solution
The fourth proportional to 128,766.30, 193,149.45 and 121,508.70 is: 182,263.05
Step by Step Solution
- Step 1: Write the proportion equation
128,766.30 : 193,149.45 = 121,508.70 : x - Step 2: Convert to fraction form
128,766.30/193,149.45 = 121,508.70/x - Step 3: Cross multiply
128,766.30x = 193,149.45 × 121,508.70 - Step 4: Simplify right side
128,766.30x = 23,469,338,575.22 - Step 5: Solve for x
x = 23,469,338,575.22/128,766.30 - Step 6: Final answer
x = 182,263.05
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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.