Finding the Fourth Proportional to 140,728.97, 194,204.52 and 76,197.09
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Solution
The fourth proportional to 140,728.97, 194,204.52 and 76,197.09 is: 105,151.19
Step by Step Solution
- Step 1: Write the proportion equation
140,728.97 : 194,204.52 = 76,197.09 : x - Step 2: Convert to fraction form
140,728.97/194,204.52 = 76,197.09/x - Step 3: Cross multiply
140,728.97x = 194,204.52 × 76,197.09 - Step 4: Simplify right side
140,728.97x = 14,797,819,288.85 - Step 5: Solve for x
x = 14,797,819,288.85/140,728.97 - Step 6: Final answer
x = 105,151.19
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.