Finding the Fourth Proportional to 157,727.60, 217,662.98 and 86,107.63
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Solution
The fourth proportional to 157,727.60, 217,662.98 and 86,107.63 is: 118,827.92
Step by Step Solution
- Step 1: Write the proportion equation
157,727.60 : 217,662.98 = 86,107.63 : x - Step 2: Convert to fraction form
157,727.60/217,662.98 = 86,107.63/x - Step 3: Cross multiply
157,727.60x = 217,662.98 × 86,107.63 - Step 4: Simplify right side
157,727.60x = 18,742,442,258.22 - Step 5: Solve for x
x = 18,742,442,258.22/157,727.60 - Step 6: Final answer
x = 118,827.92
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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.