Finding the Fourth Proportional to 128,161.14, 176,862.24 and 71,572.56
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Solution
The fourth proportional to 128,161.14, 176,862.24 and 71,572.56 is: 98,770.06
Step by Step Solution
- Step 1: Write the proportion equation
128,161.14 : 176,862.24 = 71,572.56 : x - Step 2: Convert to fraction form
128,161.14/176,862.24 = 71,572.56/x - Step 3: Cross multiply
128,161.14x = 176,862.24 × 71,572.56 - Step 4: Simplify right side
128,161.14x = 12,658,483,284.13 - Step 5: Solve for x
x = 12,658,483,284.13/128,161.14 - Step 6: Final answer
x = 98,770.06
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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.