Finding the Fourth Proportional to 157,888.19, 217,880.86 and 86,268.11
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Solution
The fourth proportional to 157,888.19, 217,880.86 and 86,268.11 is: 119,047.35
Step by Step Solution
- Step 1: Write the proportion equation
157,888.19 : 217,880.86 = 86,268.11 : x - Step 2: Convert to fraction form
157,888.19/217,880.86 = 86,268.11/x - Step 3: Cross multiply
157,888.19x = 217,880.86 × 86,268.11 - Step 4: Simplify right side
157,888.19x = 18,796,170,935.05 - Step 5: Solve for x
x = 18,796,170,935.05/157,888.19 - Step 6: Final answer
x = 119,047.35
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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.