Finding the Fourth Proportional to 157,662.14, 217,574.36 and 86,043.75
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Solution
The fourth proportional to 157,662.14, 217,574.36 and 86,043.75 is: 118,740.71
Step by Step Solution
- Step 1: Write the proportion equation
157,662.14 : 217,574.36 = 86,043.75 : x - Step 2: Convert to fraction form
157,662.14/217,574.36 = 86,043.75/x - Step 3: Cross multiply
157,662.14x = 217,574.36 × 86,043.75 - Step 4: Simplify right side
157,662.14x = 18,720,913,408.03 - Step 5: Solve for x
x = 18,720,913,408.03/157,662.14 - Step 6: Final answer
x = 118,740.71
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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.