Finding the Fourth Proportional to 128,523.70, 192,785.55 and 58,539.70
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Solution
The fourth proportional to 128,523.70, 192,785.55 and 58,539.70 is: 87,809.55
Step by Step Solution
- Step 1: Write the proportion equation
128,523.70 : 192,785.55 = 58,539.70 : x - Step 2: Convert to fraction form
128,523.70/192,785.55 = 58,539.70/x - Step 3: Cross multiply
128,523.70x = 192,785.55 × 58,539.70 - Step 4: Simplify right side
128,523.70x = 11,285,608,261.34 - Step 5: Solve for x
x = 11,285,608,261.34/128,523.70 - Step 6: Final answer
x = 87,809.55
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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.