Finding the Fourth Proportional to 134,721.60, 201,863.70 and 84,712.20
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Solution
The fourth proportional to 134,721.60, 201,863.70 and 84,712.20 is: 126,930.78
Step by Step Solution
- Step 1: Write the proportion equation
134,721.60 : 201,863.70 = 84,712.20 : x - Step 2: Convert to fraction form
134,721.60/201,863.70 = 84,712.20/x - Step 3: Cross multiply
134,721.60x = 201,863.70 × 84,712.20 - Step 4: Simplify right side
134,721.60x = 17,100,318,127.14 - Step 5: Solve for x
x = 17,100,318,127.14/134,721.60 - Step 6: Final answer
x = 126,930.78
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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.