Finding the Fourth Proportional to 128,966.40, 193,449.60 and 115,844.40
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Solution
The fourth proportional to 128,966.40, 193,449.60 and 115,844.40 is: 173,766.60
Step by Step Solution
- Step 1: Write the proportion equation
128,966.40 : 193,449.60 = 115,844.40 : x - Step 2: Convert to fraction form
128,966.40/193,449.60 = 115,844.40/x - Step 3: Cross multiply
128,966.40x = 193,449.60 × 115,844.40 - Step 4: Simplify right side
128,966.40x = 22,410,052,842.24 - Step 5: Solve for x
x = 22,410,052,842.24/128,966.40 - Step 6: Final answer
x = 173,766.60
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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.