Finding the Fourth Proportional to 113,905.68, 157,189.21 and 62,921.91
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Solution
The fourth proportional to 113,905.68, 157,189.21 and 62,921.91 is: 86,831.90
Step by Step Solution
- Step 1: Write the proportion equation
113,905.68 : 157,189.21 = 62,921.91 : x - Step 2: Convert to fraction form
113,905.68/157,189.21 = 62,921.91/x - Step 3: Cross multiply
113,905.68x = 157,189.21 × 62,921.91 - Step 4: Simplify right side
113,905.68x = 9,890,645,756.75 - Step 5: Solve for x
x = 9,890,645,756.75/113,905.68 - Step 6: Final answer
x = 86,831.90
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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.