Finding the Fourth Proportional to 154,089.99, 212,640.09 and 86,107.52
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Solution
The fourth proportional to 154,089.99, 212,640.09 and 86,107.52 is: 118,826.09
Step by Step Solution
- Step 1: Write the proportion equation
154,089.99 : 212,640.09 = 86,107.52 : x - Step 2: Convert to fraction form
154,089.99/212,640.09 = 86,107.52/x - Step 3: Cross multiply
154,089.99x = 212,640.09 × 86,107.52 - Step 4: Simplify right side
154,089.99x = 18,309,910,802.48 - Step 5: Solve for x
x = 18,309,910,802.48/154,089.99 - Step 6: Final answer
x = 118,826.09
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1.5x scale
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.