Finding the Fourth Proportional to 134,679.89, 200,831.68 and 128,057.62
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Solution
The fourth proportional to 134,679.89, 200,831.68 and 128,057.62 is: 190,956.70
Step by Step Solution
- Step 1: Write the proportion equation
134,679.89 : 200,831.68 = 128,057.62 : x - Step 2: Convert to fraction form
134,679.89/200,831.68 = 128,057.62/x - Step 3: Cross multiply
134,679.89x = 200,831.68 × 128,057.62 - Step 4: Simplify right side
134,679.89x = 25,718,026,961.40 - Step 5: Solve for x
x = 25,718,026,961.40/134,679.89 - Step 6: Final answer
x = 190,956.70
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.