Finding the Fourth Proportional to 157,645.20, 236,489.40 and 52,453.20
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Solution
The fourth proportional to 157,645.20, 236,489.40 and 52,453.20 is: 78,686.99
Step by Step Solution
- Step 1: Write the proportion equation
157,645.20 : 236,489.40 = 52,453.20 : x - Step 2: Convert to fraction form
157,645.20/236,489.40 = 52,453.20/x - Step 3: Cross multiply
157,645.20x = 236,489.40 × 52,453.20 - Step 4: Simplify right side
157,645.20x = 12,404,625,796.08 - Step 5: Solve for x
x = 12,404,625,796.08/157,645.20 - Step 6: Final answer
x = 78,686.99
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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.