Finding the Fourth Proportional to 138,460.60, 207,690.90 and 44,975.80
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Solution
The fourth proportional to 138,460.60, 207,690.90 and 44,975.80 is: 67,463.70
Step by Step Solution
- Step 1: Write the proportion equation
138,460.60 : 207,690.90 = 44,975.80 : x - Step 2: Convert to fraction form
138,460.60/207,690.90 = 44,975.80/x - Step 3: Cross multiply
138,460.60x = 207,690.90 × 44,975.80 - Step 4: Simplify right side
138,460.60x = 9,341,064,380.22 - Step 5: Solve for x
x = 9,341,064,380.22/138,460.60 - Step 6: Final answer
x = 67,463.70
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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.