Finding the Fourth Proportional to 153,757.94, 212,195.76 and 85,785.18
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Solution
The fourth proportional to 153,757.94, 212,195.76 and 85,785.18 is: 118,389.02
Step by Step Solution
- Step 1: Write the proportion equation
153,757.94 : 212,195.76 = 85,785.18 : x - Step 2: Convert to fraction form
153,757.94/212,195.76 = 85,785.18/x - Step 3: Cross multiply
153,757.94x = 212,195.76 × 85,785.18 - Step 4: Simplify right side
153,757.94x = 18,203,251,466.84 - Step 5: Solve for x
x = 18,203,251,466.84/153,757.94 - Step 6: Final answer
x = 118,389.02
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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.