Finding the Fourth Proportional to 129,240.14, 193,827.80 and 91,690.70
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Solution
The fourth proportional to 129,240.14, 193,827.80 and 91,690.70 is: 137,513.06
Step by Step Solution
- Step 1: Write the proportion equation
129,240.14 : 193,827.80 = 91,690.70 : x - Step 2: Convert to fraction form
129,240.14/193,827.80 = 91,690.70/x - Step 3: Cross multiply
129,240.14x = 193,827.80 × 91,690.70 - Step 4: Simplify right side
129,240.14x = 17,772,206,661.46 - Step 5: Solve for x
x = 17,772,206,661.46/129,240.14 - Step 6: Final answer
x = 137,513.06
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.