Finding the Fourth Proportional to 128,600.44, 192,900.68 and 53,679.71
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Solution
The fourth proportional to 128,600.44, 192,900.68 and 53,679.71 is: 80,519.58
Step by Step Solution
- Step 1: Write the proportion equation
128,600.44 : 192,900.68 = 53,679.71 : x - Step 2: Convert to fraction form
128,600.44/192,900.68 = 53,679.71/x - Step 3: Cross multiply
128,600.44x = 192,900.68 × 53,679.71 - Step 4: Simplify right side
128,600.44x = 10,354,852,909.26 - Step 5: Solve for x
x = 10,354,852,909.26/128,600.44 - Step 6: Final answer
x = 80,519.58
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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.