Finding the Fourth Proportional to 100,212.73, 138,227.11 and 64,447.99
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Solution
The fourth proportional to 100,212.73, 138,227.11 and 64,447.99 is: 88,895.49
Step by Step Solution
- Step 1: Write the proportion equation
100,212.73 : 138,227.11 = 64,447.99 : x - Step 2: Convert to fraction form
100,212.73/138,227.11 = 64,447.99/x - Step 3: Cross multiply
100,212.73x = 138,227.11 × 64,447.99 - Step 4: Simplify right side
100,212.73x = 8,908,459,403.01 - Step 5: Solve for x
x = 8,908,459,403.01/100,212.73 - Step 6: Final answer
x = 88,895.49
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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.