Finding the Fourth Proportional to 157,201.10, 216,930.35 and 85,580.96
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Solution
The fourth proportional to 157,201.10, 216,930.35 and 85,580.96 is: 118,097.81
Step by Step Solution
- Step 1: Write the proportion equation
157,201.10 : 216,930.35 = 85,580.96 : x - Step 2: Convert to fraction form
157,201.10/216,930.35 = 85,580.96/x - Step 3: Cross multiply
157,201.10x = 216,930.35 × 85,580.96 - Step 4: Simplify right side
157,201.10x = 18,565,106,735.44 - Step 5: Solve for x
x = 18,565,106,735.44/157,201.10 - Step 6: Final answer
x = 118,097.81
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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.