Finding the Fourth Proportional to 139,364.74, 207,993.95 and 125,912.66
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Solution
The fourth proportional to 139,364.74, 207,993.95 and 125,912.66 is: 187,917.49
Step by Step Solution
- Step 1: Write the proportion equation
139,364.74 : 207,993.95 = 125,912.66 : x - Step 2: Convert to fraction form
139,364.74/207,993.95 = 125,912.66/x - Step 3: Cross multiply
139,364.74x = 207,993.95 × 125,912.66 - Step 4: Simplify right side
139,364.74x = 26,189,072,343.17 - Step 5: Solve for x
x = 26,189,072,343.17/139,364.74 - Step 6: Final answer
x = 187,917.49
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.