Finding the Fourth Proportional to 140,313.60, 193,639.68 and 79,885.44
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Solution
The fourth proportional to 140,313.60, 193,639.68 and 79,885.44 is: 110,245.84
Step by Step Solution
- Step 1: Write the proportion equation
140,313.60 : 193,639.68 = 79,885.44 : x - Step 2: Convert to fraction form
140,313.60/193,639.68 = 79,885.44/x - Step 3: Cross multiply
140,313.60x = 193,639.68 × 79,885.44 - Step 4: Simplify right side
140,313.60x = 15,468,991,038.26 - Step 5: Solve for x
x = 15,468,991,038.26/140,313.60 - Step 6: Final answer
x = 110,245.84
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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.