Finding the Fourth Proportional to 138,107.11, 190,602.45 and 84,423.55
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Solution
The fourth proportional to 138,107.11, 190,602.45 and 84,423.55 is: 116,513.45
Step by Step Solution
- Step 1: Write the proportion equation
138,107.11 : 190,602.45 = 84,423.55 : x - Step 2: Convert to fraction form
138,107.11/190,602.45 = 84,423.55/x - Step 3: Cross multiply
138,107.11x = 190,602.45 × 84,423.55 - Step 4: Simplify right side
138,107.11x = 16,091,335,467.70 - Step 5: Solve for x
x = 16,091,335,467.70/138,107.11 - Step 6: Final answer
x = 116,513.45
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1.5x scale
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.