Finding the Fourth Proportional to 135,166.70, 186,516.90 and 74,729.07
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Solution
The fourth proportional to 135,166.70, 186,516.90 and 74,729.07 is: 103,118.85
Step by Step Solution
- Step 1: Write the proportion equation
135,166.70 : 186,516.90 = 74,729.07 : x - Step 2: Convert to fraction form
135,166.70/186,516.90 = 74,729.07/x - Step 3: Cross multiply
135,166.70x = 186,516.90 × 74,729.07 - Step 4: Simplify right side
135,166.70x = 13,938,234,476.28 - Step 5: Solve for x
x = 13,938,234,476.28/135,166.70 - Step 6: Final answer
x = 103,118.85
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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.