Finding the Fourth Proportional to 149,787.84, 206,708.63 and 85,253.91
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Solution
The fourth proportional to 149,787.84, 206,708.63 and 85,253.91 is: 117,651.20
Step by Step Solution
- Step 1: Write the proportion equation
149,787.84 : 206,708.63 = 85,253.91 : x - Step 2: Convert to fraction form
149,787.84/206,708.63 = 85,253.91/x - Step 3: Cross multiply
149,787.84x = 206,708.63 × 85,253.91 - Step 4: Simplify right side
149,787.84x = 17,622,718,938.24 - Step 5: Solve for x
x = 17,622,718,938.24/149,787.84 - Step 6: Final answer
x = 117,651.20
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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.