Finding the Fourth Proportional to 117,136.15, 161,567.80 and 74,170.31
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Solution
The fourth proportional to 117,136.15, 161,567.80 and 74,170.31 is: 102,304.31
Step by Step Solution
- Step 1: Write the proportion equation
117,136.15 : 161,567.80 = 74,170.31 : x - Step 2: Convert to fraction form
117,136.15/161,567.80 = 74,170.31/x - Step 3: Cross multiply
117,136.15x = 161,567.80 × 74,170.31 - Step 4: Simplify right side
117,136.15x = 11,983,532,818.75 - Step 5: Solve for x
x = 11,983,532,818.75/117,136.15 - Step 6: Final answer
x = 102,304.31
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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.