Finding the Fourth Proportional to 143,222.79, 214,965.47 and 76,737.99
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Solution
The fourth proportional to 143,222.79, 214,965.47 and 76,737.99 is: 115,177.32
Step by Step Solution
- Step 1: Write the proportion equation
143,222.79 : 214,965.47 = 76,737.99 : x - Step 2: Convert to fraction form
143,222.79/214,965.47 = 76,737.99/x - Step 3: Cross multiply
143,222.79x = 214,965.47 × 76,737.99 - Step 4: Simplify right side
143,222.79x = 16,496,017,703.52 - Step 5: Solve for x
x = 16,496,017,703.52/143,222.79 - Step 6: Final answer
x = 115,177.32
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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.