Finding the Fourth Proportional to 129,557.98, 193,898.04 and 79,669.68
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Solution
The fourth proportional to 129,557.98, 193,898.04 and 79,669.68 is: 119,234.60
Step by Step Solution
- Step 1: Write the proportion equation
129,557.98 : 193,898.04 = 79,669.68 : x - Step 2: Convert to fraction form
129,557.98/193,898.04 = 79,669.68/x - Step 3: Cross multiply
129,557.98x = 193,898.04 × 79,669.68 - Step 4: Simplify right side
129,557.98x = 15,447,793,773.55 - Step 5: Solve for x
x = 15,447,793,773.55/129,557.98 - Step 6: Final answer
x = 119,234.60
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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.