Finding the Fourth Proportional to 138,052.68, 190,042.56 and 102,175.08
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Solution
The fourth proportional to 138,052.68, 190,042.56 and 102,175.08 is: 140,653.65
Step by Step Solution
- Step 1: Write the proportion equation
138,052.68 : 190,042.56 = 102,175.08 : x - Step 2: Convert to fraction form
138,052.68/190,042.56 = 102,175.08/x - Step 3: Cross multiply
138,052.68x = 190,042.56 × 102,175.08 - Step 4: Simplify right side
138,052.68x = 19,417,613,771.40 - Step 5: Solve for x
x = 19,417,613,771.40/138,052.68 - Step 6: Final answer
x = 140,653.65
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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.