Finding the Fourth Proportional to 118,305.14, 163,136.79 and 77,967.29
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Solution
The fourth proportional to 118,305.14, 163,136.79 and 77,967.29 is: 107,512.95
Step by Step Solution
- Step 1: Write the proportion equation
118,305.14 : 163,136.79 = 77,967.29 : x - Step 2: Convert to fraction form
118,305.14/163,136.79 = 77,967.29/x - Step 3: Cross multiply
118,305.14x = 163,136.79 × 77,967.29 - Step 4: Simplify right side
118,305.14x = 12,719,333,823.44 - Step 5: Solve for x
x = 12,719,333,823.44/118,305.14 - Step 6: Final answer
x = 107,512.95
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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.