Finding the Fourth Proportional to 126,619.36, 174,778.68 and 72,925.80
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Solution
The fourth proportional to 126,619.36, 174,778.68 and 72,925.80 is: 100,662.92
Step by Step Solution
- Step 1: Write the proportion equation
126,619.36 : 174,778.68 = 72,925.80 : x - Step 2: Convert to fraction form
126,619.36/174,778.68 = 72,925.80/x - Step 3: Cross multiply
126,619.36x = 174,778.68 × 72,925.80 - Step 4: Simplify right side
126,619.36x = 12,745,875,061.94 - Step 5: Solve for x
x = 12,745,875,061.94/126,619.36 - Step 6: Final answer
x = 100,662.92
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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.