Finding the Fourth Proportional to 137,670.98, 190,179.50 and 106,243.79
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Solution
The fourth proportional to 137,670.98, 190,179.50 and 106,243.79 is: 146,765.79
Step by Step Solution
- Step 1: Write the proportion equation
137,670.98 : 190,179.50 = 106,243.79 : x - Step 2: Convert to fraction form
137,670.98/190,179.50 = 106,243.79/x - Step 3: Cross multiply
137,670.98x = 190,179.50 × 106,243.79 - Step 4: Simplify right side
137,670.98x = 20,205,389,378.19 - Step 5: Solve for x
x = 20,205,389,378.19/137,670.98 - Step 6: Final answer
x = 146,765.79
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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.