Finding the Fourth Proportional to 136,645.24, 188,570.68 and 76,219.80
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Solution
The fourth proportional to 136,645.24, 188,570.68 and 76,219.80 is: 105,183.46
Step by Step Solution
- Step 1: Write the proportion equation
136,645.24 : 188,570.68 = 76,219.80 : x - Step 2: Convert to fraction form
136,645.24/188,570.68 = 76,219.80/x - Step 3: Cross multiply
136,645.24x = 188,570.68 × 76,219.80 - Step 4: Simplify right side
136,645.24x = 14,372,819,515.46 - Step 5: Solve for x
x = 14,372,819,515.46/136,645.24 - Step 6: Final answer
x = 105,183.46
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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.