Finding the Fourth Proportional to 197,403.75, 272,417.18 and 107,979.75
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Solution
The fourth proportional to 197,403.75, 272,417.18 and 107,979.75 is: 149,012.06
Step by Step Solution
- Step 1: Write the proportion equation
197,403.75 : 272,417.18 = 107,979.75 : x - Step 2: Convert to fraction form
197,403.75/272,417.18 = 107,979.75/x - Step 3: Cross multiply
197,403.75x = 272,417.18 × 107,979.75 - Step 4: Simplify right side
197,403.75x = 29,415,538,452.21 - Step 5: Solve for x
x = 29,415,538,452.21/197,403.75 - Step 6: Final answer
x = 149,012.06
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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.