Finding the Fourth Proportional to 99,509.26, 137,320.80 and 54,187.80
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Solution
The fourth proportional to 99,509.26, 137,320.80 and 54,187.80 is: 74,778.09
Step by Step Solution
- Step 1: Write the proportion equation
99,509.26 : 137,320.80 = 54,187.80 : x - Step 2: Convert to fraction form
99,509.26/137,320.80 = 54,187.80/x - Step 3: Cross multiply
99,509.26x = 137,320.80 × 54,187.80 - Step 4: Simplify right side
99,509.26x = 7,441,112,046.24 - Step 5: Solve for x
x = 7,441,112,046.24/99,509.26 - Step 6: Final answer
x = 74,778.09
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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.