Finding the Fourth Proportional to 155,765.40, 214,956.11 and 84,145.41
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Solution
The fourth proportional to 155,765.40, 214,956.11 and 84,145.41 is: 116,120.59
Step by Step Solution
- Step 1: Write the proportion equation
155,765.40 : 214,956.11 = 84,145.41 : x - Step 2: Convert to fraction form
155,765.40/214,956.11 = 84,145.41/x - Step 3: Cross multiply
155,765.40x = 214,956.11 × 84,145.41 - Step 4: Simplify right side
155,765.40x = 18,087,569,587.23 - Step 5: Solve for x
x = 18,087,569,587.23/155,765.40 - Step 6: Final answer
x = 116,120.59
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.