Finding the Fourth Proportional to 138,360.40, 189,691.93 and 135,838.13
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Solution
The fourth proportional to 138,360.40, 189,691.93 and 135,838.13 is: 186,233.90
Step by Step Solution
- Step 1: Write the proportion equation
138,360.40 : 189,691.93 = 135,838.13 : x - Step 2: Convert to fraction form
138,360.40/189,691.93 = 135,838.13/x - Step 3: Cross multiply
138,360.40x = 189,691.93 × 135,838.13 - Step 4: Simplify right side
138,360.40x = 25,767,395,759.24 - Step 5: Solve for x
x = 25,767,395,759.24/138,360.40 - Step 6: Final answer
x = 186,233.90
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.