Finding the Fourth Proportional to 205,157.46, 283,038.12 and 128,542.98
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Solution
The fourth proportional to 205,157.46, 283,038.12 and 128,542.98 is: 177,339.70
Step by Step Solution
- Step 1: Write the proportion equation
205,157.46 : 283,038.12 = 128,542.98 : x - Step 2: Convert to fraction form
205,157.46/283,038.12 = 128,542.98/x - Step 3: Cross multiply
205,157.46x = 283,038.12 × 128,542.98 - Step 4: Simplify right side
205,157.46x = 36,382,562,433.18 - Step 5: Solve for x
x = 36,382,562,433.18/205,157.46 - Step 6: Final answer
x = 177,339.70
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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.