Finding the Fourth Proportional to 128,821.56, 177,683.81 and 124,486.44
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Solution
The fourth proportional to 128,821.56, 177,683.81 and 124,486.44 is: 171,704.37
Step by Step Solution
- Step 1: Write the proportion equation
128,821.56 : 177,683.81 = 124,486.44 : x - Step 2: Convert to fraction form
128,821.56/177,683.81 = 124,486.44/x - Step 3: Cross multiply
128,821.56x = 177,683.81 × 124,486.44 - Step 4: Simplify right side
128,821.56x = 22,119,224,330.10 - Step 5: Solve for x
x = 22,119,224,330.10/128,821.56 - Step 6: Final answer
x = 171,704.37
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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.