Finding the Fourth Proportional to 121,152.10, 181,836.15 and 71,169.70
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Solution
The fourth proportional to 121,152.10, 181,836.15 and 71,169.70 is: 106,817.99
Step by Step Solution
- Step 1: Write the proportion equation
121,152.10 : 181,836.15 = 71,169.70 : x - Step 2: Convert to fraction form
121,152.10/181,836.15 = 71,169.70/x - Step 3: Cross multiply
121,152.10x = 181,836.15 × 71,169.70 - Step 4: Simplify right side
121,152.10x = 12,941,224,244.66 - Step 5: Solve for x
x = 12,941,224,244.66/121,152.10 - Step 6: Final answer
x = 106,817.99
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1.5x scale
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.