Finding the Fourth Proportional to 161,915.36, 223,504.68 and 121,745.76
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Solution
The fourth proportional to 161,915.36, 223,504.68 and 121,745.76 is: 168,055.38
Step by Step Solution
- Step 1: Write the proportion equation
161,915.36 : 223,504.68 = 121,745.76 : x - Step 2: Convert to fraction form
161,915.36/223,504.68 = 121,745.76/x - Step 3: Cross multiply
161,915.36x = 223,504.68 × 121,745.76 - Step 4: Simplify right side
161,915.36x = 27,210,747,130.16 - Step 5: Solve for x
x = 27,210,747,130.16/161,915.36 - Step 6: Final answer
x = 168,055.38
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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.