Finding the Fourth Proportional to 125,507.57, 187,790.81 and 74,720.84
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Solution
The fourth proportional to 125,507.57, 187,790.81 and 74,720.84 is: 111,801.12
Step by Step Solution
- Step 1: Write the proportion equation
125,507.57 : 187,790.81 = 74,720.84 : x - Step 2: Convert to fraction form
125,507.57/187,790.81 = 74,720.84/x - Step 3: Cross multiply
125,507.57x = 187,790.81 × 74,720.84 - Step 4: Simplify right side
125,507.57x = 14,031,885,754.92 - Step 5: Solve for x
x = 14,031,885,754.92/125,507.57 - Step 6: Final answer
x = 111,801.12
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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.