Finding the Fourth Proportional to 138,743.36, 191,548.32 and 91,080.08
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Solution
The fourth proportional to 138,743.36, 191,548.32 and 91,080.08 is: 125,744.66
Step by Step Solution
- Step 1: Write the proportion equation
138,743.36 : 191,548.32 = 91,080.08 : x - Step 2: Convert to fraction form
138,743.36/191,548.32 = 91,080.08/x - Step 3: Cross multiply
138,743.36x = 191,548.32 × 91,080.08 - Step 4: Simplify right side
138,743.36x = 17,446,236,309.47 - Step 5: Solve for x
x = 17,446,236,309.47/138,743.36 - Step 6: Final answer
x = 125,744.66
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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.