Finding the Fourth Proportional to 130,890.97, 180,624.73 and 79,988.88
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Solution
The fourth proportional to 130,890.97, 180,624.73 and 79,988.88 is: 110,381.72
Step by Step Solution
- Step 1: Write the proportion equation
130,890.97 : 180,624.73 = 79,988.88 : x - Step 2: Convert to fraction form
130,890.97/180,624.73 = 79,988.88/x - Step 3: Cross multiply
130,890.97x = 180,624.73 × 79,988.88 - Step 4: Simplify right side
130,890.97x = 14,447,969,453.06 - Step 5: Solve for x
x = 14,447,969,453.06/130,890.97 - Step 6: Final answer
x = 110,381.72
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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.