Finding the Fourth Proportional to 130,486.24, 180,157.80 and 100,217.49
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Solution
The fourth proportional to 130,486.24, 180,157.80 and 100,217.49 is: 138,366.79
Step by Step Solution
- Step 1: Write the proportion equation
130,486.24 : 180,157.80 = 100,217.49 : x - Step 2: Convert to fraction form
130,486.24/180,157.80 = 100,217.49/x - Step 3: Cross multiply
130,486.24x = 180,157.80 × 100,217.49 - Step 4: Simplify right side
130,486.24x = 18,054,962,220.15 - Step 5: Solve for x
x = 18,054,962,220.15/130,486.24 - Step 6: Final answer
x = 138,366.79
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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.