Finding the Fourth Proportional to 138,735.18, 191,536.92 and 91,072.08
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Solution
The fourth proportional to 138,735.18, 191,536.92 and 91,072.08 is: 125,733.54
Step by Step Solution
- Step 1: Write the proportion equation
138,735.18 : 191,536.92 = 91,072.08 : x - Step 2: Convert to fraction form
138,735.18/191,536.92 = 91,072.08/x - Step 3: Cross multiply
138,735.18x = 191,536.92 × 91,072.08 - Step 4: Simplify right side
138,735.18x = 17,443,665,701.19 - Step 5: Solve for x
x = 17,443,665,701.19/138,735.18 - Step 6: Final answer
x = 125,733.54
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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.