Finding the Fourth Proportional to 115,983.07, 160,041.67 and 68,218.99
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Solution
The fourth proportional to 115,983.07, 160,041.67 and 68,218.99 is: 94,133.40
Step by Step Solution
- Step 1: Write the proportion equation
115,983.07 : 160,041.67 = 68,218.99 : x - Step 2: Convert to fraction form
115,983.07/160,041.67 = 68,218.99/x - Step 3: Cross multiply
115,983.07x = 160,041.67 × 68,218.99 - Step 4: Simplify right side
115,983.07x = 10,917,881,085.31 - Step 5: Solve for x
x = 10,917,881,085.31/115,983.07 - Step 6: Final answer
x = 94,133.40
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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.