Finding the Fourth Proportional to 122,211.44, 168,614.65 and 76,934.62
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Solution
The fourth proportional to 122,211.44, 168,614.65 and 76,934.62 is: 106,146.39
Step by Step Solution
- Step 1: Write the proportion equation
122,211.44 : 168,614.65 = 76,934.62 : x - Step 2: Convert to fraction form
122,211.44/168,614.65 = 76,934.62/x - Step 3: Cross multiply
122,211.44x = 168,614.65 × 76,934.62 - Step 4: Simplify right side
122,211.44x = 12,972,303,636.46 - Step 5: Solve for x
x = 12,972,303,636.46/122,211.44 - Step 6: Final answer
x = 106,146.39
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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.