Finding the Fourth Proportional to 137,825.80, 190,220.20 and 84,141.99
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Solution
The fourth proportional to 137,825.80, 190,220.20 and 84,141.99 is: 116,128.52
Step by Step Solution
- Step 1: Write the proportion equation
137,825.80 : 190,220.20 = 84,141.99 : x - Step 2: Convert to fraction form
137,825.80/190,220.20 = 84,141.99/x - Step 3: Cross multiply
137,825.80x = 190,220.20 × 84,141.99 - Step 4: Simplify right side
137,825.80x = 16,005,505,955.84 - Step 5: Solve for x
x = 16,005,505,955.84/137,825.80 - Step 6: Final answer
x = 116,128.52
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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.