Finding the Fourth Proportional to 145,853.30, 201,277.68 and 78,785.30
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Solution
The fourth proportional to 145,853.30, 201,277.68 and 78,785.30 is: 108,723.78
Step by Step Solution
- Step 1: Write the proportion equation
145,853.30 : 201,277.68 = 78,785.30 : x - Step 2: Convert to fraction form
145,853.30/201,277.68 = 78,785.30/x - Step 3: Cross multiply
145,853.30x = 201,277.68 × 78,785.30 - Step 4: Simplify right side
145,853.30x = 15,857,722,402.10 - Step 5: Solve for x
x = 15,857,722,402.10/145,853.30 - Step 6: Final answer
x = 108,723.78
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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.