Finding the Fourth Proportional to 121,844.20, 182,766.30 and 92,319.70
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Solution
The fourth proportional to 121,844.20, 182,766.30 and 92,319.70 is: 138,479.55
Step by Step Solution
- Step 1: Write the proportion equation
121,844.20 : 182,766.30 = 92,319.70 : x - Step 2: Convert to fraction form
121,844.20/182,766.30 = 92,319.70/x - Step 3: Cross multiply
121,844.20x = 182,766.30 × 92,319.70 - Step 4: Simplify right side
121,844.20x = 16,872,929,986.11 - Step 5: Solve for x
x = 16,872,929,986.11/121,844.20 - Step 6: Final answer
x = 138,479.55
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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.