Finding the Fourth Proportional to 201,935.76, 278,669.91 and 111,291.75
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Solution
The fourth proportional to 201,935.76, 278,669.91 and 111,291.75 is: 153,581.82
Step by Step Solution
- Step 1: Write the proportion equation
201,935.76 : 278,669.91 = 111,291.75 : x - Step 2: Convert to fraction form
201,935.76/278,669.91 = 111,291.75/x - Step 3: Cross multiply
201,935.76x = 278,669.91 × 111,291.75 - Step 4: Simplify right side
201,935.76x = 31,013,661,956.24 - Step 5: Solve for x
x = 31,013,661,956.24/201,935.76 - Step 6: Final answer
x = 153,581.82
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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.