Finding the Fourth Proportional to 115,979.07, 160,036.14 and 68,214.99
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Solution
The fourth proportional to 115,979.07, 160,036.14 and 68,214.99 is: 94,127.88
Step by Step Solution
- Step 1: Write the proportion equation
115,979.07 : 160,036.14 = 68,214.99 : x - Step 2: Convert to fraction form
115,979.07/160,036.14 = 68,214.99/x - Step 3: Cross multiply
115,979.07x = 160,036.14 × 68,214.99 - Step 4: Simplify right side
115,979.07x = 10,916,863,689.74 - Step 5: Solve for x
x = 10,916,863,689.74/115,979.07 - Step 6: Final answer
x = 94,127.88
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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.