Finding the Fourth Proportional to 153,863.11, 212,331.34 and 85,880.08
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Solution
The fourth proportional to 153,863.11, 212,331.34 and 85,880.08 is: 118,514.65
Step by Step Solution
- Step 1: Write the proportion equation
153,863.11 : 212,331.34 = 85,880.08 : x - Step 2: Convert to fraction form
153,863.11/212,331.34 = 85,880.08/x - Step 3: Cross multiply
153,863.11x = 212,331.34 × 85,880.08 - Step 4: Simplify right side
153,863.11x = 18,235,032,838.47 - Step 5: Solve for x
x = 18,235,032,838.47/153,863.11 - Step 6: Final answer
x = 118,514.65
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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.