Finding the Fourth Proportional to 134,738.10, 202,107.15 and 39,971.70
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Solution
The fourth proportional to 134,738.10, 202,107.15 and 39,971.70 is: 59,957.55
Step by Step Solution
- Step 1: Write the proportion equation
134,738.10 : 202,107.15 = 39,971.70 : x - Step 2: Convert to fraction form
134,738.10/202,107.15 = 39,971.70/x - Step 3: Cross multiply
134,738.10x = 202,107.15 × 39,971.70 - Step 4: Simplify right side
134,738.10x = 8,078,566,367.66 - Step 5: Solve for x
x = 8,078,566,367.66/134,738.10 - Step 6: Final answer
x = 59,957.55
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Double scale
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Similar ratio
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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.