Finding the Fourth Proportional to 122,318.67, 168,728.09 and 76,924.65
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Solution
The fourth proportional to 122,318.67, 168,728.09 and 76,924.65 is: 106,110.94
Step by Step Solution
- Step 1: Write the proportion equation
122,318.67 : 168,728.09 = 76,924.65 : x - Step 2: Convert to fraction form
122,318.67/168,728.09 = 76,924.65/x - Step 3: Cross multiply
122,318.67x = 168,728.09 × 76,924.65 - Step 4: Simplify right side
122,318.67x = 12,979,348,883.80 - Step 5: Solve for x
x = 12,979,348,883.80/122,318.67 - Step 6: Final answer
x = 106,110.94
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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.