Finding the Fourth Proportional to 198,741.74, 297,944.12 and 86,337.23
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Solution
The fourth proportional to 198,741.74, 297,944.12 and 86,337.23 is: 129,432.65
Step by Step Solution
- Step 1: Write the proportion equation
198,741.74 : 297,944.12 = 86,337.23 : x - Step 2: Convert to fraction form
198,741.74/297,944.12 = 86,337.23/x - Step 3: Cross multiply
198,741.74x = 297,944.12 × 86,337.23 - Step 4: Simplify right side
198,741.74x = 25,723,668,741.71 - Step 5: Solve for x
x = 25,723,668,741.71/198,741.74 - Step 6: Final answer
x = 129,432.65
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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.