Finding the Fourth Proportional to 126,192.96, 174,139.74 and 78,445.49
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Solution
The fourth proportional to 126,192.96, 174,139.74 and 78,445.49 is: 108,250.70
Step by Step Solution
- Step 1: Write the proportion equation
126,192.96 : 174,139.74 = 78,445.49 : x - Step 2: Convert to fraction form
126,192.96/174,139.74 = 78,445.49/x - Step 3: Cross multiply
126,192.96x = 174,139.74 × 78,445.49 - Step 4: Simplify right side
126,192.96x = 13,660,476,362.07 - Step 5: Solve for x
x = 13,660,476,362.07/126,192.96 - Step 6: Final answer
x = 108,250.70
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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.