Finding the Fourth Proportional to 134,539.80, 201,809.70 and 128,088.60
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Solution
The fourth proportional to 134,539.80, 201,809.70 and 128,088.60 is: 192,132.90
Step by Step Solution
- Step 1: Write the proportion equation
134,539.80 : 201,809.70 = 128,088.60 : x - Step 2: Convert to fraction form
134,539.80/201,809.70 = 128,088.60/x - Step 3: Cross multiply
134,539.80x = 201,809.70 × 128,088.60 - Step 4: Simplify right side
134,539.80x = 25,849,521,939.42 - Step 5: Solve for x
x = 25,849,521,939.42/134,539.80 - Step 6: Final answer
x = 192,132.90
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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.