Finding the Fourth Proportional to 151,489.80, 208,978.99 and 115,617.56
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Solution
The fourth proportional to 151,489.80, 208,978.99 and 115,617.56 is: 159,493.51
Step by Step Solution
- Step 1: Write the proportion equation
151,489.80 : 208,978.99 = 115,617.56 : x - Step 2: Convert to fraction form
151,489.80/208,978.99 = 115,617.56/x - Step 3: Cross multiply
151,489.80x = 208,978.99 × 115,617.56 - Step 4: Simplify right side
151,489.80x = 24,161,639,581.13 - Step 5: Solve for x
x = 24,161,639,581.13/151,489.80 - Step 6: Final answer
x = 159,493.51
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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.