Finding the Fourth Proportional to 99,526.41, 149,439.36 and 85,637.75
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Solution
The fourth proportional to 99,526.41, 149,439.36 and 85,637.75 is: 128,585.47
Step by Step Solution
- Step 1: Write the proportion equation
99,526.41 : 149,439.36 = 85,637.75 : x - Step 2: Convert to fraction form
99,526.41/149,439.36 = 85,637.75/x - Step 3: Cross multiply
99,526.41x = 149,439.36 × 85,637.75 - Step 4: Simplify right side
99,526.41x = 12,797,649,804.64 - Step 5: Solve for x
x = 12,797,649,804.64/99,526.41 - Step 6: Final answer
x = 128,585.47
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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.