Finding the Fourth Proportional to 121,855.99, 167,787.43 and 106,663.63
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Solution
The fourth proportional to 121,855.99, 167,787.43 and 106,663.63 is: 146,868.58
Step by Step Solution
- Step 1: Write the proportion equation
121,855.99 : 167,787.43 = 106,663.63 : x - Step 2: Convert to fraction form
121,855.99/167,787.43 = 106,663.63/x - Step 3: Cross multiply
121,855.99x = 167,787.43 × 106,663.63 - Step 4: Simplify right side
121,855.99x = 17,896,816,352.17 - Step 5: Solve for x
x = 17,896,816,352.17/121,855.99 - Step 6: Final answer
x = 146,868.58
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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.