Finding the Fourth Proportional to 155,424.92, 214,486.05 and 87,441.94
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Solution
The fourth proportional to 155,424.92, 214,486.05 and 87,441.94 is: 120,669.69
Step by Step Solution
- Step 1: Write the proportion equation
155,424.92 : 214,486.05 = 87,441.94 : x - Step 2: Convert to fraction form
155,424.92/214,486.05 = 87,441.94/x - Step 3: Cross multiply
155,424.92x = 214,486.05 × 87,441.94 - Step 4: Simplify right side
155,424.92x = 18,755,076,314.94 - Step 5: Solve for x
x = 18,755,076,314.94/155,424.92 - Step 6: Final answer
x = 120,669.69
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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.