Finding the Fourth Proportional to 117,239.18, 161,786.30 and 66,938.18
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Solution
The fourth proportional to 117,239.18, 161,786.30 and 66,938.18 is: 92,372.54
Step by Step Solution
- Step 1: Write the proportion equation
117,239.18 : 161,786.30 = 66,938.18 : x - Step 2: Convert to fraction form
117,239.18/161,786.30 = 66,938.18/x - Step 3: Cross multiply
117,239.18x = 161,786.30 × 66,938.18 - Step 4: Simplify right side
117,239.18x = 10,829,680,470.93 - Step 5: Solve for x
x = 10,829,680,470.93/117,239.18 - Step 6: Final answer
x = 92,372.54
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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.