Finding the Fourth Proportional to 140,778.24, 194,274.21 and 76,247.62
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Solution
The fourth proportional to 140,778.24, 194,274.21 and 76,247.62 is: 105,221.84
Step by Step Solution
- Step 1: Write the proportion equation
140,778.24 : 194,274.21 = 76,247.62 : x - Step 2: Convert to fraction form
140,778.24/194,274.21 = 76,247.62/x - Step 3: Cross multiply
140,778.24x = 194,274.21 × 76,247.62 - Step 4: Simplify right side
140,778.24x = 14,812,945,345.26 - Step 5: Solve for x
x = 14,812,945,345.26/140,778.24 - Step 6: Final answer
x = 105,221.84
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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.