Finding the Fourth Proportional to 134,460.40, 201,690.60 and 87,221.20
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Solution
The fourth proportional to 134,460.40, 201,690.60 and 87,221.20 is: 130,831.80
Step by Step Solution
- Step 1: Write the proportion equation
134,460.40 : 201,690.60 = 87,221.20 : x - Step 2: Convert to fraction form
134,460.40/201,690.60 = 87,221.20/x - Step 3: Cross multiply
134,460.40x = 201,690.60 × 87,221.20 - Step 4: Simplify right side
134,460.40x = 17,591,696,160.72 - Step 5: Solve for x
x = 17,591,696,160.72/134,460.40 - Step 6: Final answer
x = 130,831.80
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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.