Finding the Fourth Proportional to 138,305.80, 207,458.70 and 114,977.80
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Solution
The fourth proportional to 138,305.80, 207,458.70 and 114,977.80 is: 172,466.70
Step by Step Solution
- Step 1: Write the proportion equation
138,305.80 : 207,458.70 = 114,977.80 : x - Step 2: Convert to fraction form
138,305.80/207,458.70 = 114,977.80/x - Step 3: Cross multiply
138,305.80x = 207,458.70 × 114,977.80 - Step 4: Simplify right side
138,305.80x = 23,853,144,916.86 - Step 5: Solve for x
x = 23,853,144,916.86/138,305.80 - Step 6: Final answer
x = 172,466.70
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1.5x scale
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.