Finding the Fourth Proportional to 129,238.14, 193,824.81 and 91,688.70
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Solution
The fourth proportional to 129,238.14, 193,824.81 and 91,688.70 is: 137,510.06
Step by Step Solution
- Step 1: Write the proportion equation
129,238.14 : 193,824.81 = 91,688.70 : x - Step 2: Convert to fraction form
129,238.14/193,824.81 = 91,688.70/x - Step 3: Cross multiply
129,238.14x = 193,824.81 × 91,688.70 - Step 4: Simplify right side
129,238.14x = 17,771,544,856.65 - Step 5: Solve for x
x = 17,771,544,856.65/129,238.14 - Step 6: Final answer
x = 137,510.06
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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.