Finding the Fourth Proportional to 124,474.99, 171,749.71 and 72,782.14
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Solution
The fourth proportional to 124,474.99, 171,749.71 and 72,782.14 is: 100,424.28
Step by Step Solution
- Step 1: Write the proportion equation
124,474.99 : 171,749.71 = 72,782.14 : x - Step 2: Convert to fraction form
124,474.99/171,749.71 = 72,782.14/x - Step 3: Cross multiply
124,474.99x = 171,749.71 × 72,782.14 - Step 4: Simplify right side
124,474.99x = 12,500,311,438.18 - Step 5: Solve for x
x = 12,500,311,438.18/124,474.99 - Step 6: Final answer
x = 100,424.28
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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.