Finding the Fourth Proportional to 153,879.92, 212,450.29 and 99,460.58
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Solution
The fourth proportional to 153,879.92, 212,450.29 and 99,460.58 is: 137,317.65
Step by Step Solution
- Step 1: Write the proportion equation
153,879.92 : 212,450.29 = 99,460.58 : x - Step 2: Convert to fraction form
153,879.92/212,450.29 = 99,460.58/x - Step 3: Cross multiply
153,879.92x = 212,450.29 × 99,460.58 - Step 4: Simplify right side
153,879.92x = 21,130,428,313.13 - Step 5: Solve for x
x = 21,130,428,313.13/153,879.92 - Step 6: Final answer
x = 137,317.65
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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.