Finding the Fourth Proportional to 115,787.41, 159,735.90 and 68,019.21
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Solution
The fourth proportional to 115,787.41, 159,735.90 and 68,019.21 is: 93,836.70
Step by Step Solution
- Step 1: Write the proportion equation
115,787.41 : 159,735.90 = 68,019.21 : x - Step 2: Convert to fraction form
115,787.41/159,735.90 = 68,019.21/x - Step 3: Cross multiply
115,787.41x = 159,735.90 × 68,019.21 - Step 4: Simplify right side
115,787.41x = 10,865,108,927.96 - Step 5: Solve for x
x = 10,865,108,927.96/115,787.41 - Step 6: Final answer
x = 93,836.70
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1.5x scale
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.