Finding the Fourth Proportional to 158,734.51, 219,055.39 and 87,112.99
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Solution
The fourth proportional to 158,734.51, 219,055.39 and 87,112.99 is: 120,216.90
Step by Step Solution
- Step 1: Write the proportion equation
158,734.51 : 219,055.39 = 87,112.99 : x - Step 2: Convert to fraction form
158,734.51/219,055.39 = 87,112.99/x - Step 3: Cross multiply
158,734.51x = 219,055.39 × 87,112.99 - Step 4: Simplify right side
158,734.51x = 19,082,570,670.65 - Step 5: Solve for x
x = 19,082,570,670.65/158,734.51 - Step 6: Final answer
x = 120,216.90
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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.