Finding the Fourth Proportional to 104,431.70, 144,115.26 and 56,684.63
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Solution
The fourth proportional to 104,431.70, 144,115.26 and 56,684.63 is: 78,224.53
Step by Step Solution
- Step 1: Write the proportion equation
104,431.70 : 144,115.26 = 56,684.63 : x - Step 2: Convert to fraction form
104,431.70/144,115.26 = 56,684.63/x - Step 3: Cross multiply
104,431.70x = 144,115.26 × 56,684.63 - Step 4: Simplify right side
104,431.70x = 8,169,120,190.45 - Step 5: Solve for x
x = 8,169,120,190.45/104,431.70 - Step 6: Final answer
x = 78,224.53
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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.