Finding the Fourth Proportional to 115,979.76, 159,696.18 and 101,557.08
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Solution
The fourth proportional to 115,979.76, 159,696.18 and 101,557.08 is: 139,837.14
Step by Step Solution
- Step 1: Write the proportion equation
115,979.76 : 159,696.18 = 101,557.08 : x - Step 2: Convert to fraction form
115,979.76/159,696.18 = 101,557.08/x - Step 3: Cross multiply
115,979.76x = 159,696.18 × 101,557.08 - Step 4: Simplify right side
115,979.76x = 16,218,277,727.95 - Step 5: Solve for x
x = 16,218,277,727.95/115,979.76 - Step 6: Final answer
x = 139,837.14
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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.