Finding the Fourth Proportional to 135,149.15, 186,497.80 and 74,716.18
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Solution
The fourth proportional to 135,149.15, 186,497.80 and 74,716.18 is: 103,103.89
Step by Step Solution
- Step 1: Write the proportion equation
135,149.15 : 186,497.80 = 74,716.18 : x - Step 2: Convert to fraction form
135,149.15/186,497.80 = 74,716.18/x - Step 3: Cross multiply
135,149.15x = 186,497.80 × 74,716.18 - Step 4: Simplify right side
135,149.15x = 13,934,403,194.40 - Step 5: Solve for x
x = 13,934,403,194.40/135,149.15 - Step 6: Final answer
x = 103,103.89
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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.