Finding the Fourth Proportional to 117,220.70, 161,764.35 and 63,507.05
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Solution
The fourth proportional to 117,220.70, 161,764.35 and 63,507.05 is: 87,639.61
Step by Step Solution
- Step 1: Write the proportion equation
117,220.70 : 161,764.35 = 63,507.05 : x - Step 2: Convert to fraction form
117,220.70/161,764.35 = 63,507.05/x - Step 3: Cross multiply
117,220.70x = 161,764.35 × 63,507.05 - Step 4: Simplify right side
117,220.70x = 10,273,176,663.67 - Step 5: Solve for x
x = 10,273,176,663.67/117,220.70 - Step 6: Final answer
x = 87,639.61
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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.