Finding the Fourth Proportional to 145,896.19, 201,336.74 and 78,828.19
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Solution
The fourth proportional to 145,896.19, 201,336.74 and 78,828.19 is: 108,782.90
Step by Step Solution
- Step 1: Write the proportion equation
145,896.19 : 201,336.74 = 78,828.19 : x - Step 2: Convert to fraction form
145,896.19/201,336.74 = 78,828.19/x - Step 3: Cross multiply
145,896.19x = 201,336.74 × 78,828.19 - Step 4: Simplify right side
145,896.19x = 15,871,010,192.82 - Step 5: Solve for x
x = 15,871,010,192.82/145,896.19 - Step 6: Final answer
x = 108,782.90
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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.