Finding the Fourth Proportional to 100,655.36, 138,922.80 and 58,217.84
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Solution
The fourth proportional to 100,655.36, 138,922.80 and 58,217.84 is: 80,351.26
Step by Step Solution
- Step 1: Write the proportion equation
100,655.36 : 138,922.80 = 58,217.84 : x - Step 2: Convert to fraction form
100,655.36/138,922.80 = 58,217.84/x - Step 3: Cross multiply
100,655.36x = 138,922.80 × 58,217.84 - Step 4: Simplify right side
100,655.36x = 8,087,785,342.75 - Step 5: Solve for x
x = 8,087,785,342.75/100,655.36 - Step 6: Final answer
x = 80,351.26
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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.