Finding the Fourth Proportional to 121,876.06, 168,183.99 and 70,890.25
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Solution
The fourth proportional to 121,876.06, 168,183.99 and 70,890.25 is: 97,825.65
Step by Step Solution
- Step 1: Write the proportion equation
121,876.06 : 168,183.99 = 70,890.25 : x - Step 2: Convert to fraction form
121,876.06/168,183.99 = 70,890.25/x - Step 3: Cross multiply
121,876.06x = 168,183.99 × 70,890.25 - Step 4: Simplify right side
121,876.06x = 11,922,605,097.10 - Step 5: Solve for x
x = 11,922,605,097.10/121,876.06 - Step 6: Final answer
x = 97,825.65
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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.