Finding the Fourth Proportional to 157,041.20, 216,744.36 and 93,414.80
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Solution
The fourth proportional to 157,041.20, 216,744.36 and 93,414.80 is: 128,928.78
Step by Step Solution
- Step 1: Write the proportion equation
157,041.20 : 216,744.36 = 93,414.80 : x - Step 2: Convert to fraction form
157,041.20/216,744.36 = 93,414.80/x - Step 3: Cross multiply
157,041.20x = 216,744.36 × 93,414.80 - Step 4: Simplify right side
157,041.20x = 20,247,131,040.53 - Step 5: Solve for x
x = 20,247,131,040.53/157,041.20 - Step 6: Final answer
x = 128,928.78
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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.