Finding the Fourth Proportional to 117,220.97, 161,764.70 and 63,507.31
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Solution
The fourth proportional to 117,220.97, 161,764.70 and 63,507.31 is: 87,639.95
Step by Step Solution
- Step 1: Write the proportion equation
117,220.97 : 161,764.70 = 63,507.31 : x - Step 2: Convert to fraction form
117,220.97/161,764.70 = 63,507.31/x - Step 3: Cross multiply
117,220.97x = 161,764.70 × 63,507.31 - Step 4: Simplify right side
117,220.97x = 10,273,240,228.01 - Step 5: Solve for x
x = 10,273,240,228.01/117,220.97 - Step 6: Final answer
x = 87,639.95
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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.