Finding the Fourth Proportional to 145,785.43, 201,115.14 and 85,318.63
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Solution
The fourth proportional to 145,785.43, 201,115.14 and 85,318.63 is: 117,699.47
Step by Step Solution
- Step 1: Write the proportion equation
145,785.43 : 201,115.14 = 85,318.63 : x - Step 2: Convert to fraction form
145,785.43/201,115.14 = 85,318.63/x - Step 3: Cross multiply
145,785.43x = 201,115.14 × 85,318.63 - Step 4: Simplify right side
145,785.43x = 17,158,867,394.33 - Step 5: Solve for x
x = 17,158,867,394.33/145,785.43 - Step 6: Final answer
x = 117,699.47
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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.