Finding the Fourth Proportional to 122,961.68, 169,329.79 and 106,821.62
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Solution
The fourth proportional to 122,961.68, 169,329.79 and 106,821.62 is: 147,103.41
Step by Step Solution
- Step 1: Write the proportion equation
122,961.68 : 169,329.79 = 106,821.62 : x - Step 2: Convert to fraction form
122,961.68/169,329.79 = 106,821.62/x - Step 3: Cross multiply
122,961.68x = 169,329.79 × 106,821.62 - Step 4: Simplify right side
122,961.68x = 18,088,082,482.06 - Step 5: Solve for x
x = 18,088,082,482.06/122,961.68 - Step 6: Final answer
x = 147,103.41
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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.