Finding the Fourth Proportional to 123,090.84, 169,865.28 and 66,502.08
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Solution
The fourth proportional to 123,090.84, 169,865.28 and 66,502.08 is: 91,772.83
Step by Step Solution
- Step 1: Write the proportion equation
123,090.84 : 169,865.28 = 66,502.08 : x - Step 2: Convert to fraction form
123,090.84/169,865.28 = 66,502.08/x - Step 3: Cross multiply
123,090.84x = 169,865.28 × 66,502.08 - Step 4: Simplify right side
123,090.84x = 11,296,394,439.78 - Step 5: Solve for x
x = 11,296,394,439.78/123,090.84 - Step 6: Final answer
x = 91,772.83
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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.