Finding the Fourth Proportional to 120,318.06, 180,654.51 and 67,113.99
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Solution
The fourth proportional to 120,318.06, 180,654.51 and 67,113.99 is: 100,769.95
Step by Step Solution
- Step 1: Write the proportion equation
120,318.06 : 180,654.51 = 67,113.99 : x - Step 2: Convert to fraction form
120,318.06/180,654.51 = 67,113.99/x - Step 3: Cross multiply
120,318.06x = 180,654.51 × 67,113.99 - Step 4: Simplify right side
120,318.06x = 12,124,444,977.59 - Step 5: Solve for x
x = 12,124,444,977.59/120,318.06 - Step 6: Final answer
x = 100,769.95
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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.