Finding the Fourth Proportional to 157,660.40, 236,490.60 and 129,666.80
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Solution
The fourth proportional to 157,660.40, 236,490.60 and 129,666.80 is: 194,500.20
Step by Step Solution
- Step 1: Write the proportion equation
157,660.40 : 236,490.60 = 129,666.80 : x - Step 2: Convert to fraction form
157,660.40/236,490.60 = 129,666.80/x - Step 3: Cross multiply
157,660.40x = 236,490.60 × 129,666.80 - Step 4: Simplify right side
157,660.40x = 30,664,979,332.08 - Step 5: Solve for x
x = 30,664,979,332.08/157,660.40 - Step 6: Final answer
x = 194,500.20
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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.