Finding the Fourth Proportional to 138,125.29, 190,558.92 and 77,682.07
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Solution
The fourth proportional to 138,125.29, 190,558.92 and 77,682.07 is: 107,170.90
Step by Step Solution
- Step 1: Write the proportion equation
138,125.29 : 190,558.92 = 77,682.07 : x - Step 2: Convert to fraction form
138,125.29/190,558.92 = 77,682.07/x - Step 3: Cross multiply
138,125.29x = 190,558.92 × 77,682.07 - Step 4: Simplify right side
138,125.29x = 14,803,011,362.56 - Step 5: Solve for x
x = 14,803,011,362.56/138,125.29 - Step 6: Final answer
x = 107,170.90
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.