Finding the Fourth Proportional to 112,138.64, 167,864.50 and 72,617.12
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Solution
The fourth proportional to 112,138.64, 167,864.50 and 72,617.12 is: 108,703.27
Step by Step Solution
- Step 1: Write the proportion equation
112,138.64 : 167,864.50 = 72,617.12 : x - Step 2: Convert to fraction form
112,138.64/167,864.50 = 72,617.12/x - Step 3: Cross multiply
112,138.64x = 167,864.50 × 72,617.12 - Step 4: Simplify right side
112,138.64x = 12,189,836,540.24 - Step 5: Solve for x
x = 12,189,836,540.24/112,138.64 - Step 6: Final answer
x = 108,703.27
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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.