Finding the Fourth Proportional to 128,497.24, 177,325.77 and 71,908.48
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Solution
The fourth proportional to 128,497.24, 177,325.77 and 71,908.48 is: 99,233.47
Step by Step Solution
- Step 1: Write the proportion equation
128,497.24 : 177,325.77 = 71,908.48 : x - Step 2: Convert to fraction form
128,497.24/177,325.77 = 71,908.48/x - Step 3: Cross multiply
128,497.24x = 177,325.77 × 71,908.48 - Step 4: Simplify right side
128,497.24x = 12,751,226,585.53 - Step 5: Solve for x
x = 12,751,226,585.53/128,497.24 - Step 6: Final answer
x = 99,233.47
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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.