Finding the Fourth Proportional to 138,741.36, 191,545.56 and 91,078.08
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Solution
The fourth proportional to 138,741.36, 191,545.56 and 91,078.08 is: 125,741.90
Step by Step Solution
- Step 1: Write the proportion equation
138,741.36 : 191,545.56 = 91,078.08 : x - Step 2: Convert to fraction form
138,741.36/191,545.56 = 91,078.08/x - Step 3: Cross multiply
138,741.36x = 191,545.56 × 91,078.08 - Step 4: Simplify right side
138,741.36x = 17,445,601,837.32 - Step 5: Solve for x
x = 17,445,601,837.32/138,741.36 - Step 6: Final answer
x = 125,741.90
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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.