Finding the Fourth Proportional to 115,838.40, 174,128.80 and 107,620.80
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Solution
The fourth proportional to 115,838.40, 174,128.80 and 107,620.80 is: 161,776.07
Step by Step Solution
- Step 1: Write the proportion equation
115,838.40 : 174,128.80 = 107,620.80 : x - Step 2: Convert to fraction form
115,838.40/174,128.80 = 107,620.80/x - Step 3: Cross multiply
115,838.40x = 174,128.80 × 107,620.80 - Step 4: Simplify right side
115,838.40x = 18,739,880,759.04 - Step 5: Solve for x
x = 18,739,880,759.04/115,838.40 - Step 6: Final answer
x = 161,776.07
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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.