Finding the Fourth Proportional to 126,138.98, 174,069.56 and 68,778.75
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Solution
The fourth proportional to 126,138.98, 174,069.56 and 68,778.75 is: 94,913.46
Step by Step Solution
- Step 1: Write the proportion equation
126,138.98 : 174,069.56 = 68,778.75 : x - Step 2: Convert to fraction form
126,138.98/174,069.56 = 68,778.75/x - Step 3: Cross multiply
126,138.98x = 174,069.56 × 68,778.75 - Step 4: Simplify right side
126,138.98x = 11,972,286,921.80 - Step 5: Solve for x
x = 11,972,286,921.80/126,138.98 - Step 6: Final answer
x = 94,913.46
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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.