Finding the Fourth Proportional to 118,221.27, 163,169.63 and 72,288.75
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Solution
The fourth proportional to 118,221.27, 163,169.63 and 72,288.75 is: 99,773.32
Step by Step Solution
- Step 1: Write the proportion equation
118,221.27 : 163,169.63 = 72,288.75 : x - Step 2: Convert to fraction form
118,221.27/163,169.63 = 72,288.75/x - Step 3: Cross multiply
118,221.27x = 163,169.63 × 72,288.75 - Step 4: Simplify right side
118,221.27x = 11,795,328,229.22 - Step 5: Solve for x
x = 11,795,328,229.22/118,221.27 - Step 6: Final answer
x = 99,773.32
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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.