Finding the Fourth Proportional to 117,389.36, 161,971.98 and 69,658.49
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Solution
The fourth proportional to 117,389.36, 161,971.98 and 69,658.49 is: 96,113.68
Step by Step Solution
- Step 1: Write the proportion equation
117,389.36 : 161,971.98 = 69,658.49 : x - Step 2: Convert to fraction form
117,389.36/161,971.98 = 69,658.49/x - Step 3: Cross multiply
117,389.36x = 161,971.98 × 69,658.49 - Step 4: Simplify right side
117,389.36x = 11,282,723,549.11 - Step 5: Solve for x
x = 11,282,723,549.11/117,389.36 - Step 6: Final answer
x = 96,113.68
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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.