Finding the Fourth Proportional to 137,040.97, 189,117.95 and 76,614.97
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Solution
The fourth proportional to 137,040.97, 189,117.95 and 76,614.97 is: 105,729.45
Step by Step Solution
- Step 1: Write the proportion equation
137,040.97 : 189,117.95 = 76,614.97 : x - Step 2: Convert to fraction form
137,040.97/189,117.95 = 76,614.97/x - Step 3: Cross multiply
137,040.97x = 189,117.95 × 76,614.97 - Step 4: Simplify right side
137,040.97x = 14,489,266,065.71 - Step 5: Solve for x
x = 14,489,266,065.71/137,040.97 - Step 6: Final answer
x = 105,729.45
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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.