Finding the Fourth Proportional to 128,120.97, 191,882.34 and 101,286.63
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Solution
The fourth proportional to 128,120.97, 191,882.34 and 101,286.63 is: 151,693.48
Step by Step Solution
- Step 1: Write the proportion equation
128,120.97 : 191,882.34 = 101,286.63 : x - Step 2: Convert to fraction form
128,120.97/191,882.34 = 101,286.63/x - Step 3: Cross multiply
128,120.97x = 191,882.34 × 101,286.63 - Step 4: Simplify right side
128,120.97x = 19,435,115,575.11 - Step 5: Solve for x
x = 19,435,115,575.11/128,120.97 - Step 6: Final answer
x = 151,693.48
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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.