Finding the Fourth Proportional to 149,394.18, 206,161.56 and 81,412.06
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Solution
The fourth proportional to 149,394.18, 206,161.56 and 81,412.06 is: 112,347.33
Step by Step Solution
- Step 1: Write the proportion equation
149,394.18 : 206,161.56 = 81,412.06 : x - Step 2: Convert to fraction form
149,394.18/206,161.56 = 81,412.06/x - Step 3: Cross multiply
149,394.18x = 206,161.56 × 81,412.06 - Step 4: Simplify right side
149,394.18x = 16,784,037,292.41 - Step 5: Solve for x
x = 16,784,037,292.41/149,394.18 - Step 6: Final answer
x = 112,347.33
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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.