Finding the Fourth Proportional to 112,785.70, 169,161.84 and 68,400.53
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Solution
The fourth proportional to 112,785.70, 169,161.84 and 68,400.53 is: 102,590.67
Step by Step Solution
- Step 1: Write the proportion equation
112,785.70 : 169,161.84 = 68,400.53 : x - Step 2: Convert to fraction form
112,785.70/169,161.84 = 68,400.53/x - Step 3: Cross multiply
112,785.70x = 169,161.84 × 68,400.53 - Step 4: Simplify right side
112,785.70x = 11,570,759,934.68 - Step 5: Solve for x
x = 11,570,759,934.68/112,785.70 - Step 6: Final answer
x = 102,590.67
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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.