Finding the Fourth Proportional to 112,024.05, 154,489.30 and 81,761.46
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Solution
The fourth proportional to 112,024.05, 154,489.30 and 81,761.46 is: 112,754.99
Step by Step Solution
- Step 1: Write the proportion equation
112,024.05 : 154,489.30 = 81,761.46 : x - Step 2: Convert to fraction form
112,024.05/154,489.30 = 81,761.46/x - Step 3: Cross multiply
112,024.05x = 154,489.30 × 81,761.46 - Step 4: Simplify right side
112,024.05x = 12,631,270,722.38 - Step 5: Solve for x
x = 12,631,270,722.38/112,024.05 - Step 6: Final answer
x = 112,754.99
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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.