Finding the Fourth Proportional to 131,132.12, 180,961.49 and 74,543.49
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Solution
The fourth proportional to 131,132.12, 180,961.49 and 74,543.49 is: 102,869.55
Step by Step Solution
- Step 1: Write the proportion equation
131,132.12 : 180,961.49 = 74,543.49 : x - Step 2: Convert to fraction form
131,132.12/180,961.49 = 74,543.49/x - Step 3: Cross multiply
131,132.12x = 180,961.49 × 74,543.49 - Step 4: Simplify right side
131,132.12x = 13,489,501,206.56 - Step 5: Solve for x
x = 13,489,501,206.56/131,132.12 - Step 6: Final answer
x = 102,869.55
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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.