Finding the Fourth Proportional to 128,414.96, 177,209.23 and 71,052.79
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Solution
The fourth proportional to 128,414.96, 177,209.23 and 71,052.79 is: 98,050.95
Step by Step Solution
- Step 1: Write the proportion equation
128,414.96 : 177,209.23 = 71,052.79 : x - Step 2: Convert to fraction form
128,414.96/177,209.23 = 71,052.79/x - Step 3: Cross multiply
128,414.96x = 177,209.23 × 71,052.79 - Step 4: Simplify right side
128,414.96x = 12,591,209,319.21 - Step 5: Solve for x
x = 12,591,209,319.21/128,414.96 - Step 6: Final answer
x = 98,050.95
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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.