Finding the Fourth Proportional to 145,519.74, 200,816.48 and 81,857.99
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Solution
The fourth proportional to 145,519.74, 200,816.48 and 81,857.99 is: 112,963.60
Step by Step Solution
- Step 1: Write the proportion equation
145,519.74 : 200,816.48 = 81,857.99 : x - Step 2: Convert to fraction form
145,519.74/200,816.48 = 81,857.99/x - Step 3: Cross multiply
145,519.74x = 200,816.48 × 81,857.99 - Step 4: Simplify right side
145,519.74x = 16,438,434,118.36 - Step 5: Solve for x
x = 16,438,434,118.36/145,519.74 - Step 6: Final answer
x = 112,963.60
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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.