Finding the Fourth Proportional to 137,850.04, 190,236.36 and 77,420.80
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Solution
The fourth proportional to 137,850.04, 190,236.36 and 77,420.80 is: 106,842.56
Step by Step Solution
- Step 1: Write the proportion equation
137,850.04 : 190,236.36 = 77,420.80 : x - Step 2: Convert to fraction form
137,850.04/190,236.36 = 77,420.80/x - Step 3: Cross multiply
137,850.04x = 190,236.36 × 77,420.80 - Step 4: Simplify right side
137,850.04x = 14,728,251,180.29 - Step 5: Solve for x
x = 14,728,251,180.29/137,850.04 - Step 6: Final answer
x = 106,842.56
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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.