Finding the Fourth Proportional to 128,527.93, 177,343.33 and 80,753.59
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Solution
The fourth proportional to 128,527.93, 177,343.33 and 80,753.59 is: 111,424.12
Step by Step Solution
- Step 1: Write the proportion equation
128,527.93 : 177,343.33 = 80,753.59 : x - Step 2: Convert to fraction form
128,527.93/177,343.33 = 80,753.59/x - Step 3: Cross multiply
128,527.93x = 177,343.33 × 80,753.59 - Step 4: Simplify right side
128,527.93x = 14,321,111,457.16 - Step 5: Solve for x
x = 14,321,111,457.16/128,527.93 - Step 6: Final answer
x = 111,424.12
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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.