Finding the Fourth Proportional to 127,953.42, 191,923.21 and 39,207.18
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Solution
The fourth proportional to 127,953.42, 191,923.21 and 39,207.18 is: 58,808.65
Step by Step Solution
- Step 1: Write the proportion equation
127,953.42 : 191,923.21 = 39,207.18 : x - Step 2: Convert to fraction form
127,953.42/191,923.21 = 39,207.18/x - Step 3: Cross multiply
127,953.42x = 191,923.21 × 39,207.18 - Step 4: Simplify right side
127,953.42x = 7,524,767,840.65 - Step 5: Solve for x
x = 7,524,767,840.65/127,953.42 - Step 6: Final answer
x = 58,808.65
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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.