Finding the Fourth Proportional to 134,426.30, 201,639.45 and 128,521.40
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Solution
The fourth proportional to 134,426.30, 201,639.45 and 128,521.40 is: 192,782.10
Step by Step Solution
- Step 1: Write the proportion equation
134,426.30 : 201,639.45 = 128,521.40 : x - Step 2: Convert to fraction form
134,426.30/201,639.45 = 128,521.40/x - Step 3: Cross multiply
134,426.30x = 201,639.45 × 128,521.40 - Step 4: Simplify right side
134,426.30x = 25,914,984,409.23 - Step 5: Solve for x
x = 25,914,984,409.23/134,426.30 - Step 6: Final answer
x = 192,782.10
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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.