Finding the Fourth Proportional to 109,207.80, 163,811.70 and 53,911.80
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Solution
The fourth proportional to 109,207.80, 163,811.70 and 53,911.80 is: 80,867.70
Step by Step Solution
- Step 1: Write the proportion equation
109,207.80 : 163,811.70 = 53,911.80 : x - Step 2: Convert to fraction form
109,207.80/163,811.70 = 53,911.80/x - Step 3: Cross multiply
109,207.80x = 163,811.70 × 53,911.80 - Step 4: Simplify right side
109,207.80x = 8,831,383,608.06 - Step 5: Solve for x
x = 8,831,383,608.06/109,207.80 - Step 6: Final answer
x = 80,867.70
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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.