Finding the Fourth Proportional to 151,869.12, 209,677.92 and 135,925.92
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Solution
The fourth proportional to 151,869.12, 209,677.92 and 135,925.92 is: 187,665.96
Step by Step Solution
- Step 1: Write the proportion equation
151,869.12 : 209,677.92 = 135,925.92 : x - Step 2: Convert to fraction form
151,869.12/209,677.92 = 135,925.92/x - Step 3: Cross multiply
151,869.12x = 209,677.92 × 135,925.92 - Step 4: Simplify right side
151,869.12x = 28,500,664,179.69 - Step 5: Solve for x
x = 28,500,664,179.69/151,869.12 - Step 6: Final answer
x = 187,665.96
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.