Finding the Fourth Proportional to 185,431.05, 278,023.68 and 67,086.99
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Solution
The fourth proportional to 185,431.05, 278,023.68 and 67,086.99 is: 100,586.02
Step by Step Solution
- Step 1: Write the proportion equation
185,431.05 : 278,023.68 = 67,086.99 : x - Step 2: Convert to fraction form
185,431.05/278,023.68 = 67,086.99/x - Step 3: Cross multiply
185,431.05x = 278,023.68 × 67,086.99 - Step 4: Simplify right side
185,431.05x = 18,651,771,839.92 - Step 5: Solve for x
x = 18,651,771,839.92/185,431.05 - Step 6: Final answer
x = 100,586.02
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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.