Finding the Fourth Proportional to 157,232.46, 216,977.99 and 85,611.18
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Solution
The fourth proportional to 157,232.46, 216,977.99 and 85,611.18 is: 118,141.90
Step by Step Solution
- Step 1: Write the proportion equation
157,232.46 : 216,977.99 = 85,611.18 : x - Step 2: Convert to fraction form
157,232.46/216,977.99 = 85,611.18/x - Step 3: Cross multiply
157,232.46x = 216,977.99 × 85,611.18 - Step 4: Simplify right side
157,232.46x = 18,575,741,329.87 - Step 5: Solve for x
x = 18,575,741,329.87/157,232.46 - Step 6: Final answer
x = 118,141.90
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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.