Finding the Fourth Proportional to 130,496.40, 180,076.41 and 76,770.99
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Solution
The fourth proportional to 130,496.40, 180,076.41 and 76,770.99 is: 105,938.89
Step by Step Solution
- Step 1: Write the proportion equation
130,496.40 : 180,076.41 = 76,770.99 : x - Step 2: Convert to fraction form
130,496.40/180,076.41 = 76,770.99/x - Step 3: Cross multiply
130,496.40x = 180,076.41 × 76,770.99 - Step 4: Simplify right side
130,496.40x = 13,824,644,271.35 - Step 5: Solve for x
x = 13,824,644,271.35/130,496.40 - Step 6: Final answer
x = 105,938.89
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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.