Finding the Fourth Proportional to 145,776.61, 201,178.49 and 81,250.09
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Solution
The fourth proportional to 145,776.61, 201,178.49 and 81,250.09 is: 112,128.89
Step by Step Solution
- Step 1: Write the proportion equation
145,776.61 : 201,178.49 = 81,250.09 : x - Step 2: Convert to fraction form
145,776.61/201,178.49 = 81,250.09/x - Step 3: Cross multiply
145,776.61x = 201,178.49 × 81,250.09 - Step 4: Simplify right side
145,776.61x = 16,345,769,509.37 - Step 5: Solve for x
x = 16,345,769,509.37/145,776.61 - Step 6: Final answer
x = 112,128.89
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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.