Finding the Fourth Proportional to 197,715.09, 272,847.08 and 107,071.20
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Solution
The fourth proportional to 197,715.09, 272,847.08 and 107,071.20 is: 147,758.39
Step by Step Solution
- Step 1: Write the proportion equation
197,715.09 : 272,847.08 = 107,071.20 : x - Step 2: Convert to fraction form
197,715.09/272,847.08 = 107,071.20/x - Step 3: Cross multiply
197,715.09x = 272,847.08 × 107,071.20 - Step 4: Simplify right side
197,715.09x = 29,214,063,736.74 - Step 5: Solve for x
x = 29,214,063,736.74/197,715.09 - Step 6: Final answer
x = 147,758.39
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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.