Finding the Fourth Proportional to 134,781.40, 202,220.70 and 129,921.40
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Solution
The fourth proportional to 134,781.40, 202,220.70 and 129,921.40 is: 194,928.95
Step by Step Solution
- Step 1: Write the proportion equation
134,781.40 : 202,220.70 = 129,921.40 : x - Step 2: Convert to fraction form
134,781.40/202,220.70 = 129,921.40/x - Step 3: Cross multiply
134,781.40x = 202,220.70 × 129,921.40 - Step 4: Simplify right side
134,781.40x = 26,272,796,452.98 - Step 5: Solve for x
x = 26,272,796,452.98/134,781.40 - Step 6: Final answer
x = 194,928.95
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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.