Finding the Fourth Proportional to 117,187.29, 161,673.84 and 86,633.75
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Solution
The fourth proportional to 117,187.29, 161,673.84 and 86,633.75 is: 119,521.59
Step by Step Solution
- Step 1: Write the proportion equation
117,187.29 : 161,673.84 = 86,633.75 : x - Step 2: Convert to fraction form
117,187.29/161,673.84 = 86,633.75/x - Step 3: Cross multiply
117,187.29x = 161,673.84 × 86,633.75 - Step 4: Simplify right side
117,187.29x = 14,006,411,440.28 - Step 5: Solve for x
x = 14,006,411,440.28/117,187.29 - Step 6: Final answer
x = 119,521.59
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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.