Finding the Fourth Proportional to 126,190.58, 174,142.68 and 72,479.08
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Solution
The fourth proportional to 126,190.58, 174,142.68 and 72,479.08 is: 100,020.95
Step by Step Solution
- Step 1: Write the proportion equation
126,190.58 : 174,142.68 = 72,479.08 : x - Step 2: Convert to fraction form
126,190.58/174,142.68 = 72,479.08/x - Step 3: Cross multiply
126,190.58x = 174,142.68 × 72,479.08 - Step 4: Simplify right side
126,190.58x = 12,621,701,235.13 - Step 5: Solve for x
x = 12,621,701,235.13/126,190.58 - Step 6: Final answer
x = 100,020.95
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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.