Finding the Fourth Proportional to 134,478.80, 201,718.20 and 128,355.20
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Solution
The fourth proportional to 134,478.80, 201,718.20 and 128,355.20 is: 192,532.80
Step by Step Solution
- Step 1: Write the proportion equation
134,478.80 : 201,718.20 = 128,355.20 : x - Step 2: Convert to fraction form
134,478.80/201,718.20 = 128,355.20/x - Step 3: Cross multiply
134,478.80x = 201,718.20 × 128,355.20 - Step 4: Simplify right side
134,478.80x = 25,891,579,904.64 - Step 5: Solve for x
x = 25,891,579,904.64/134,478.80 - Step 6: Final answer
x = 192,532.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.