Finding the Fourth Proportional to 138,326.79, 207,378.29 and 58,313.09
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Solution
The fourth proportional to 138,326.79, 207,378.29 and 58,313.09 is: 87,422.45
Step by Step Solution
- Step 1: Write the proportion equation
138,326.79 : 207,378.29 = 58,313.09 : x - Step 2: Convert to fraction form
138,326.79/207,378.29 = 58,313.09/x - Step 3: Cross multiply
138,326.79x = 207,378.29 × 58,313.09 - Step 4: Simplify right side
138,326.79x = 12,092,867,560.36 - Step 5: Solve for x
x = 12,092,867,560.36/138,326.79 - Step 6: Final answer
x = 87,422.45
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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.