Finding the Fourth Proportional to 118,829.19, 163,984.26 and 65,116.26
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Solution
The fourth proportional to 118,829.19, 163,984.26 and 65,116.26 is: 89,860.43
Step by Step Solution
- Step 1: Write the proportion equation
118,829.19 : 163,984.26 = 65,116.26 : x - Step 2: Convert to fraction form
118,829.19/163,984.26 = 65,116.26/x - Step 3: Cross multiply
118,829.19x = 163,984.26 × 65,116.26 - Step 4: Simplify right side
118,829.19x = 10,678,041,710.07 - Step 5: Solve for x
x = 10,678,041,710.07/118,829.19 - Step 6: Final answer
x = 89,860.43
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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.