Finding the Fourth Proportional to 99,789.84, 137,709.99 and 68,014.26
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Solution
The fourth proportional to 99,789.84, 137,709.99 and 68,014.26 is: 93,859.69
Step by Step Solution
- Step 1: Write the proportion equation
99,789.84 : 137,709.99 = 68,014.26 : x - Step 2: Convert to fraction form
99,789.84/137,709.99 = 68,014.26/x - Step 3: Cross multiply
99,789.84x = 137,709.99 × 68,014.26 - Step 4: Simplify right side
99,789.84x = 9,366,243,064.46 - Step 5: Solve for x
x = 9,366,243,064.46/99,789.84 - Step 6: Final answer
x = 93,859.69
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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.