Finding the Fourth Proportional to 118,021.63, 162,867.79 and 64,307.09
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Solution
The fourth proportional to 118,021.63, 162,867.79 and 64,307.09 is: 88,742.66
Step by Step Solution
- Step 1: Write the proportion equation
118,021.63 : 162,867.79 = 64,307.09 : x - Step 2: Convert to fraction form
118,021.63/162,867.79 = 64,307.09/x - Step 3: Cross multiply
118,021.63x = 162,867.79 × 64,307.09 - Step 4: Simplify right side
118,021.63x = 10,473,553,629.63 - Step 5: Solve for x
x = 10,473,553,629.63/118,021.63 - Step 6: Final answer
x = 88,742.66
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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.