Finding the Fourth Proportional to 122,681.82, 169,311.99 and 68,979.90
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Solution
The fourth proportional to 122,681.82, 169,311.99 and 68,979.90 is: 95,198.49
Step by Step Solution
- Step 1: Write the proportion equation
122,681.82 : 169,311.99 = 68,979.90 : x - Step 2: Convert to fraction form
122,681.82/169,311.99 = 68,979.90/x - Step 3: Cross multiply
122,681.82x = 169,311.99 × 68,979.90 - Step 4: Simplify right side
122,681.82x = 11,679,124,139.00 - Step 5: Solve for x
x = 11,679,124,139.00/122,681.82 - Step 6: Final answer
x = 95,198.49
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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.