Finding the Fourth Proportional to 149,370.90, 206,129.34 and 81,388.68
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Solution
The fourth proportional to 149,370.90, 206,129.34 and 81,388.68 is: 112,315.02
Step by Step Solution
- Step 1: Write the proportion equation
149,370.90 : 206,129.34 = 81,388.68 : x - Step 2: Convert to fraction form
149,370.90/206,129.34 = 81,388.68/x - Step 3: Cross multiply
149,370.90x = 206,129.34 × 81,388.68 - Step 4: Simplify right side
149,370.90x = 16,776,594,891.87 - Step 5: Solve for x
x = 16,776,594,891.87/149,370.90 - Step 6: Final answer
x = 112,315.02
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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.