Finding the Fourth Proportional to 138,216.70, 207,325.05 and 68,232.70
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Solution
The fourth proportional to 138,216.70, 207,325.05 and 68,232.70 is: 102,349.05
Step by Step Solution
- Step 1: Write the proportion equation
138,216.70 : 207,325.05 = 68,232.70 : x - Step 2: Convert to fraction form
138,216.70/207,325.05 = 68,232.70/x - Step 3: Cross multiply
138,216.70x = 207,325.05 × 68,232.70 - Step 4: Simplify right side
138,216.70x = 14,146,347,939.14 - Step 5: Solve for x
x = 14,146,347,939.14/138,216.70 - Step 6: Final answer
x = 102,349.05
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Similar ratio
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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.