Finding the Fourth Proportional to 134,742.20, 201,767.70 and 128,521.40
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Solution
The fourth proportional to 134,742.20, 201,767.70 and 128,521.40 is: 192,452.46
Step by Step Solution
- Step 1: Write the proportion equation
134,742.20 : 201,767.70 = 128,521.40 : x - Step 2: Convert to fraction form
134,742.20/201,767.70 = 128,521.40/x - Step 3: Cross multiply
134,742.20x = 201,767.70 × 128,521.40 - Step 4: Simplify right side
134,742.20x = 25,931,467,278.78 - Step 5: Solve for x
x = 25,931,467,278.78/134,742.20 - Step 6: Final answer
x = 192,452.46
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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.