Finding the Fourth Proportional to 139,908.46, 193,073.34 and 76,246.09
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Solution
The fourth proportional to 139,908.46, 193,073.34 and 76,246.09 is: 105,219.42
Step by Step Solution
- Step 1: Write the proportion equation
139,908.46 : 193,073.34 = 76,246.09 : x - Step 2: Convert to fraction form
139,908.46/193,073.34 = 76,246.09/x - Step 3: Cross multiply
139,908.46x = 193,073.34 × 76,246.09 - Step 4: Simplify right side
139,908.46x = 14,721,087,258.24 - Step 5: Solve for x
x = 14,721,087,258.24/139,908.46 - Step 6: Final answer
x = 105,219.42
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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.