Finding the Fourth Proportional to 117,346.80, 161,937.70 and 63,631.74
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Solution
The fourth proportional to 117,346.80, 161,937.70 and 63,631.74 is: 87,811.32
Step by Step Solution
- Step 1: Write the proportion equation
117,346.80 : 161,937.70 = 63,631.74 : x - Step 2: Convert to fraction form
117,346.80/161,937.70 = 63,631.74/x - Step 3: Cross multiply
117,346.80x = 161,937.70 × 63,631.74 - Step 4: Simplify right side
117,346.80x = 10,304,377,622.60 - Step 5: Solve for x
x = 10,304,377,622.60/117,346.80 - Step 6: Final answer
x = 87,811.32
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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.