Finding the Fourth Proportional to 145,790.15, 201,197.12 and 81,263.61
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Solution
The fourth proportional to 145,790.15, 201,197.12 and 81,263.61 is: 112,147.52
Step by Step Solution
- Step 1: Write the proportion equation
145,790.15 : 201,197.12 = 81,263.61 : x - Step 2: Convert to fraction form
145,790.15/201,197.12 = 81,263.61/x - Step 3: Cross multiply
145,790.15x = 201,197.12 × 81,263.61 - Step 4: Simplify right side
145,790.15x = 16,350,003,886.49 - Step 5: Solve for x
x = 16,350,003,886.49/145,790.15 - Step 6: Final answer
x = 112,147.52
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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.