Finding the Fourth Proportional to 131,690.12, 197,541.84 and 75,515.18
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Solution
The fourth proportional to 131,690.12, 197,541.84 and 75,515.18 is: 113,276.59
Step by Step Solution
- Step 1: Write the proportion equation
131,690.12 : 197,541.84 = 75,515.18 : x - Step 2: Convert to fraction form
131,690.12/197,541.84 = 75,515.18/x - Step 3: Cross multiply
131,690.12x = 197,541.84 × 75,515.18 - Step 4: Simplify right side
131,690.12x = 14,917,407,605.13 - Step 5: Solve for x
x = 14,917,407,605.13/131,690.12 - Step 6: Final answer
x = 113,276.59
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.