Finding the Fourth Proportional to 100,509.66, 138,723.84 and 58,062.42
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Solution
The fourth proportional to 100,509.66, 138,723.84 and 58,062.42 is: 80,137.99
Step by Step Solution
- Step 1: Write the proportion equation
100,509.66 : 138,723.84 = 58,062.42 : x - Step 2: Convert to fraction form
100,509.66/138,723.84 = 58,062.42/x - Step 3: Cross multiply
100,509.66x = 138,723.84 × 58,062.42 - Step 4: Simplify right side
100,509.66x = 8,054,641,862.09 - Step 5: Solve for x
x = 8,054,641,862.09/100,509.66 - Step 6: Final answer
x = 80,137.99
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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.