Finding the Fourth Proportional to 157,086.96, 216,910.80 and 145,690.08
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Solution
The fourth proportional to 157,086.96, 216,910.80 and 145,690.08 is: 201,173.62
Step by Step Solution
- Step 1: Write the proportion equation
157,086.96 : 216,910.80 = 145,690.08 : x - Step 2: Convert to fraction form
157,086.96/216,910.80 = 145,690.08/x - Step 3: Cross multiply
157,086.96x = 216,910.80 × 145,690.08 - Step 4: Simplify right side
157,086.96x = 31,601,751,804.86 - Step 5: Solve for x
x = 31,601,751,804.86/157,086.96 - Step 6: Final answer
x = 201,173.62
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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.