Finding the Fourth Proportional to 120,629.95, 180,857.45 and 81,088.99
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Solution
The fourth proportional to 120,629.95, 180,857.45 and 81,088.99 is: 121,574.68
Step by Step Solution
- Step 1: Write the proportion equation
120,629.95 : 180,857.45 = 81,088.99 : x - Step 2: Convert to fraction form
120,629.95/180,857.45 = 81,088.99/x - Step 3: Cross multiply
120,629.95x = 180,857.45 × 81,088.99 - Step 4: Simplify right side
120,629.95x = 14,665,547,549.03 - Step 5: Solve for x
x = 14,665,547,549.03/120,629.95 - Step 6: Final answer
x = 121,574.68
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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.