Finding the Fourth Proportional to 191,318.35, 286,982.25 and 91,489.09
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Solution
The fourth proportional to 191,318.35, 286,982.25 and 91,489.09 is: 137,235.89
Step by Step Solution
- Step 1: Write the proportion equation
191,318.35 : 286,982.25 = 91,489.09 : x - Step 2: Convert to fraction form
191,318.35/286,982.25 = 91,489.09/x - Step 3: Cross multiply
191,318.35x = 286,982.25 × 91,489.09 - Step 4: Simplify right side
191,318.35x = 26,255,744,898.65 - Step 5: Solve for x
x = 26,255,744,898.65/191,318.35 - Step 6: Final answer
x = 137,235.89
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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.