Finding the Fourth Proportional to 128,593.37, 177,465.53 and 71,238.99
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Solution
The fourth proportional to 128,593.37, 177,465.53 and 71,238.99 is: 98,313.51
Step by Step Solution
- Step 1: Write the proportion equation
128,593.37 : 177,465.53 = 71,238.99 : x - Step 2: Convert to fraction form
128,593.37/177,465.53 = 71,238.99/x - Step 3: Cross multiply
128,593.37x = 177,465.53 × 71,238.99 - Step 4: Simplify right side
128,593.37x = 12,642,465,960.61 - Step 5: Solve for x
x = 12,642,465,960.61/128,593.37 - Step 6: Final answer
x = 98,313.51
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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.