Finding the Fourth Proportional to 157,397.16, 217,201.77 and 85,775.66
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Solution
The fourth proportional to 157,397.16, 217,201.77 and 85,775.66 is: 118,366.96
Step by Step Solution
- Step 1: Write the proportion equation
157,397.16 : 217,201.77 = 85,775.66 : x - Step 2: Convert to fraction form
157,397.16/217,201.77 = 85,775.66/x - Step 3: Cross multiply
157,397.16x = 217,201.77 × 85,775.66 - Step 4: Simplify right side
157,397.16x = 18,630,624,088.91 - Step 5: Solve for x
x = 18,630,624,088.91/157,397.16 - Step 6: Final answer
x = 118,366.96
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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.