Finding the Fourth Proportional to 145,778.15, 201,174.85 and 81,251.55
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Solution
The fourth proportional to 145,778.15, 201,174.85 and 81,251.55 is: 112,127.70
Step by Step Solution
- Step 1: Write the proportion equation
145,778.15 : 201,174.85 = 81,251.55 : x - Step 2: Convert to fraction form
145,778.15/201,174.85 = 81,251.55/x - Step 3: Cross multiply
145,778.15x = 201,174.85 × 81,251.55 - Step 4: Simplify right side
145,778.15x = 16,345,768,383.52 - Step 5: Solve for x
x = 16,345,768,383.52/145,778.15 - Step 6: Final answer
x = 112,127.70
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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.