Finding the Fourth Proportional to 128,452.22, 177,323.58 and 74,717.66
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Solution
The fourth proportional to 128,452.22, 177,323.58 and 74,717.66 is: 103,144.99
Step by Step Solution
- Step 1: Write the proportion equation
128,452.22 : 177,323.58 = 74,717.66 : x - Step 2: Convert to fraction form
128,452.22/177,323.58 = 74,717.66/x - Step 3: Cross multiply
128,452.22x = 177,323.58 × 74,717.66 - Step 4: Simplify right side
128,452.22x = 13,249,202,960.42 - Step 5: Solve for x
x = 13,249,202,960.42/128,452.22 - Step 6: Final answer
x = 103,144.99
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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.